US4546551A - Electrical control system - Google Patents

Electrical control system Download PDF

Info

Publication number
US4546551A
US4546551A US06478364 US47836483A US4546551A US 4546551 A US4546551 A US 4546551A US 06478364 US06478364 US 06478364 US 47836483 A US47836483 A US 47836483A US 4546551 A US4546551 A US 4546551A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
output
display
means
signal
vehicle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06478364
Inventor
Jeffrey L. Franks
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Johnson Controls Technology Co
Original Assignee
Johnson Controls Interiors Technology Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date
Family has litigation

Links

Images

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C17/00Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
    • G01C17/02Magnetic compasses
    • G01C17/28Electromagnetic compasses
    • G01C17/30Earth-inductor compasses
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C17/00Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
    • G01C17/38Testing, calibrating, or compensating of compasses

Abstract

The system of the present invention provides an electrical digital compass for use in a vehicle which includes a unique compensation and variation correction control which is readily set by the vehicle operator with the operation of push-button switches. The electrical display system and circuitry includes a microprocessor for comparing the information from a magnetic field sensor when the vehicle is aligned in a magnetically known direction and for providing a correction signal to assure the displayed output corresponds to the predetermined magnetic field alignment. In areas where magnetic variation is significant, the system generates, stores and processes a correction signal to assure the displayed output corresponds to the true heading of the vehicle. In one embodiment of the invention, a temperature sensor is provided to indicate the ambient temperature in which the vehicle is operating and which is digitally displayed to the operator.

Description

BACKGROUND OF THE INVENTION

The present invention relates to an electrical control system for a vehicle and particularly one for use in connection with a display of the vehicle's heading.

In recent years, digital electronics technology has been employed in the automotive industry to provide, for example, the display of speed and engine operating parameters to the vehicle user.

In a compass for use in a vehicle, it is necessary to compensate the compass to correct for stray magnetic fields and ferromagnetic material in the vicinity of the sensor. For accuracy, a second and different correction for variation in the earth's magnetic field as a function of the geographic location of the vehicle is desirable. Thus, for example, in the United States, the magnetic variation between true north and magnetic north from the east to west coast is approximately 40°. Thus, a compass system installed in a vehicle which may travel in various parts of the country during use should include means for correcting for the earth's magnetic field variation as well as means for compensating for the particular installation of the compass in an individual vehicle.

Typically, vehicle mounted compasses have been mechanical types with rotating compass cards mounted in a viscous damping media. An electrical compass has been described in a 1980 SAE paper entitled Magnetic Field Sensor and Its Application to Automobiles by Hisatsugu Itoh, SAE/SP-80/458. This compass employs a flux-gate sensor and solid state circuits and compensation correction only is provided by manually adjustable potentiometers in a circuit coupled to the flux-gate sensor. U.S. Pat. No. 4,030,204 discloses a vehicle automotive compass in which Hall effect sensors are employed and in which compensation is provided by the utilization of conventional adjustably mounted magnets as frequently employed in conventional vehicle compasses employing movable compass cards.

SUMMARY OF THE PRESENT INVENTION

The system of the present invention provides an electrical digital compass for use in a vehicle which includes a unique compensation and variation correction control which is readily set by the vehicle operator with the operation of push-button switches. The electrical display system and circuitry includes a microprocessor for comparing the information from a magnetic field sensor when the vehicle is aligned in a magnetically known direction and for automatically providing a correction signal to assure the displayed output corresponds to the predetermined magnetic field alignment. In areas where magnetic variation is significant, the system generates, stores and processes a correction signal to assure the displayed output corresponds to the true heading of the vehicle.

In a preferred embodiment of the invention, a microprocessor is employed and programmed to process signals from the magnetic sensor and provide compensation and variation correction information which is employed to process signals provided by the magnetic sensor and provide digital display output signals indicating the vehicle's true direction. In one embodiment of the invention, temperature sensing means is provided to indicate the ambient temperature in which the vehicle is operating and which is digitally displayed to the operator. The temperature display may also provide an alarm signal when a predetermined temperature has been reached indicating possible dnagerous driving conditions.

These and other features, advantages and objects of the present invention will become apparent upon reading the following description thereof together with reference to the accompanying drawings, in which:

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a fragmentary, perspective view of a display and control module embodying the present invention;

FIG. 2 is an electrical circuit diagram, partially in block and schematic form, of a system embodying the present invention;

FIG. 3 is a partial detailed electrical circuit diagram in block and schematic form of the system embodying the present invention;

FIG. 4 is a flow diagram of the programming for a microprocessor incorporated in one embodiment of the present invention; and

FIG. 5 is a flow diagram of the programming of the microprocessor for the variation function of one embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring initially to FIG. 1, there is shown a control and display module 10 which is adapted to be integrally included in a vehicle during manufacturing, although it could be separately added at a later time. The module 10 is positioned in the roof 12 of a vehicle and centered near the top edge of windshield 14, typically just above the rearward mirror. Module 10 includes a pair of map reading lamps 16 having switches 17 for operating lamp means positioned behind lenses 18 which direct illumination into the lap area of either the vehicle driver or passenger side of the vehicle, depending on which switch is actuated. The center of the module includes a garage door opening transmitter 20 including a three-position switch 22 for actuating any one of three different garage door remote control units by the actuation of push-button switch 24. Module 10 may alos include an electrical sunroof control switch 25. The construction of the lamp modules 16 and garage door transmitter module 20 is generally disclosed in U.S. Pat. No. 4,241,870, issued Dec. 30, 1980.

Module 10 additionally includes a separate display panel 30 which includes display indicators 31, 32, 33 and 34 for displaying vehicle operating parameters such as engine temperature, oil pressure, generator and fuel warning or the like which can either be displayed in a digital alpha-numeric format or as warning lights. The center of display module 30 includes a digital display 35 providing, in one embodiment of the present invention, an octant display 36 of the vehicle heading in an alpha format and on the left side of display 35, a temperature display 37 providing fahrenheit or centigrade display of the exterior ambient temperature of the air near the vehicle as well as a warning signal when road conditions approach freezing, as will be described hereinafter. The temperature display circuit is actuated by a push-button temperature switch 38 while the compass circuit is actuated by a push-button switch 39. A pair of apertures 40 and 41 provide limited access to calibrate and compensation switches 42 and 44, respectively (FIG. 2), which are only occasionally used and are push switches mounted to a circuit board positioned behind panel 45 and are actuated by a pointed instrument such as a ball point pen. Thus, module 10 incorporates, at a single overhead location conveniently positioned for operator use, a control and information display center for the vehicle.

As shown in FIG. 2, the compass and temperature display system includes an oscillator 46 which, in the preferred embodiment, is an R-C oscillator having an output frequency of approximately 100 kHz at output terminal 47 thereof. The output signal from oscillator 46 is applied to a counter circuit 48 providing 500 Hz at output terminal 49 which is applied to a driver amplifier 50 which subsequently applies the 500 Hz signals to excitation winding 11 of a flux-gate sensor 13. Counter 48 also provides a 1 kHz signal at output terminal 51 which is applied to synchronous phase detector circuits 52 and 54. The output terminal 47 of oscillator 46 is also coupled to clock input terminals of digital bandpass filters 56 and 58. Filters 56 and 58 also include signal input terminals 57 and 59, respectively, coupled to one end of sensing coils 14 and 15 of sensor 13, as shown in FIG. 2, with the remaining terminals of coils 14 and 15 commonly coupled to a floating ground.

The output of bandpass filters 56 and 58 are coupled to the input terminals of synchronous phase detectors 52 and 54 such that second harmonic frequency signals are applied to each of the synchronous phase detectors which are actuated by an enabling signal from counter 48 via an enabling line 53 to apply positive and negative half-cycle sinusoidal signals received from sensing coils 14 and 15 through bandpass filters 56 and 58 to integrating and inverting amplifier circuits 60 and 62. The closed loop gain of the system is controlled through a feedbath path including conductors 61 and 63 extending between integrating amplifier 60 and flux-gate sense winding 14 and integrator 62 and flux-gate sense winding 15, respectively. At the output terminals 65 and 66 of integrators 60 and 62, respectively, there is thus provided DC varying signals e1 and e2, respectively, which represent the direction information from sensing coils 14 and 15. The amplitude and polarity of e1 and e2 varies with vehicle direction with respect to the earth's magnetic field. These DC varying signals are applied to a suitable interface circuit 70, including for example, suitable amplifiers and an AD converter for converting the DC signal information to digital signals. Circuit 70, in turn, is coupled to a microprocessor 75 which includes associated RAM and ROM memories with the ROM programmed to mathematically derive an output control signal in the form of the arc tangent of the ratio e1 /e2 to provide a digital output control signal applied to a display driver circuit 80 for displays 35 such that octant direction and temperature information can be displayed to the vehicle operator. The processing of signals e1 and e2 from integrator circuits 60 and 62 by the microprocessor and program to provide the tan-1 (e1 /e2) in a digital format for octant display of vehicle direction is entirely conventional.

Microprocessor 75 also receives input signals from switches 38, 39, 42 and 44 through an interface circuit 85 and from temperature sensing means such as a thermistor 90 through interface circuit 92. Thermistor 90 is positioned exterior of the vehicle such as in the front grill area to measure the outside ambient air temperature.

The microprocessor includes output terminals 76 and 77 coupled to D/A converters 78 and 79, respectively. The outputs of the D/A converters are coupled to sensing coils 14 and 15 through resistors 81 and 83, respectively to provide correction signals to the sensor 13, as described below. A detailed description of the operation of the bandpass filters and synchronous phase detectors to provide direction representative signals is presented in U.S. Pat. No. 4,424,631, entitled ELECTRICAL COMPASS, issued on Jan. 10, 1984 the disclosure of which is incorporated hereby by reference. Having described the overall circuit arrangement by which the microprocessor 75 receives direction indicating signals from the flux-gate sensor 13 and provides a compass output display therefrom and provides correction information through D/A converters 78 and 79 to the flux-gate sensor as well as receives and processes temperature information, a more detailed description of the circuit of the present invention together with the operation of the system is presented in connection with first FIG. 3 and subsequently FIGS. 4 and 5.

In FIG. 3, the same reference numerals corresponding to structure shown in FIG. 2 are employed. In the Figure, the flux-gate sensor 13 has its excitation coil 11 AC coupled by means of a capacitor 100 to the driver amplifier 50 (FIG. 2) through input terminals 101 and 102. The excitation frequency is, in the preferred embodiment of the invention, approximately 500 Hz. The north/south detection winding 14 of sensor 13 has an output terminal 104 coupled to bandpass filter 56 at input terminal 5 thereof while east/west sensing winding 15 has its output terminal 106 coupled to input terminal 16 of bandpass filter 58. Filters 56 and 58 are each 1/2 of an integrated circuit chip Model No. MF10BN available from National Semiconductor Corporation and are coupled to a source of operating voltage Vcc which is a regulated nine volt power supply derived from the vehicle's twelve volt battery. The north/south and east/west windings 14 and 15, respectively, includes resistors 108 and 110 coupled in parallel across the windings which have their terminals remote from their output terminals coupled to a floating ground 112 which is +4.5 volts DC in the preferred embodiment of the invention.

The bandpass filters 56 and 58 and their operation is described in greater detail in U.S. Pat. No. 4,424,631 and provide at output terminals 2 and 19 thereof second harmonic 1 kHz sinusoidal signals which are coupled by capacitors 114 and 116 to input terminals 4 and 12 of the synchronous phase detection circuits 52 and 54. Circuits 52 and 54 are combined on a single monolithic integrated circuit chip 53' which includes a 4016 National Semiconductor integrated circuit, an oscillator and counter circuits which supply 100 KHz timing signals at output pin 1 to inputs 10 and 11 of circuits 56 and 58, respectively. A 200 kHz R-C oscillator including resistor 118, 120 and capacitor 122 provides synchronous clock signals to the clock input of microprocessor 75 through inverter 55 and to the display driver 50 (FIG. 2). The sinusoidal second harmonic frequency signals at output terminals 3 and 5 and 11 and 13 alternate 1/2 cycles of 1 kHz information, the amplitude and sign of which is direction indicative, and are applied to the input terminals of the integrating circuits 60 and 62, respectively, including integrating resistive capacitive networks, as shown in FIG. 3.

The output of integrators 60 and 62 are varying DC level signals e1 and e2 which are applied to the negative input terminals of the interface circuit 70 comprising digital comparators 120 and 122, respectively. Signals e1 and e2 are representative of the north and south component of the sensed magnetic field as well as the orthogonal east and west component, respectively. The output of integrators 60 and 62 also are coupled via feedback lines 61 and 66 and gain controlling resistors 61' and 66' in a negative feedback control configuration. Each of the operational amplifiers 120 and 122 of circuit 70 have their positive input terminals coupled to output G2 of microprocessor 75 which is a National Semiconductor COP345L microprocessor.

Output terminal G2 provides a variable duty cycle signal which is time shared between 120 and 122 and is applied to a D to A converter including inverter circuit 124, integrator resistor 126 and capacitor 128 and operational amplifier 130 coupled as a voltage follower and having its output terminal coupled to the positive input terminals of digital commparators 120 and 122 via resistors 131 and 132, respectively. Comparators 120 and 122 also include feedback resistors 121 and 123, respectively, for prevention of oscillation. The output signal at G2 thus provides a variable duty cycle positive going signal, the average component of which is proportional to the amplitude of e1 or e2 or, as described in detail below in connection with the temperature sensing circuit including thermistor 90, the sensed temperature. The operation of the microprocessor, in response to digital input signals applied at the terminals L0, L1 and L2 through comparators 120, 122 and 166 to provide a variable duty cycle output at terminal G2, is described in the 1982 Cops Microcontroller Data Book published by National Semiconductor. Variable duty cycle output signals also applied to output terminal G1 and G0 of microprocessor 75 with the signal from terminal G1 (which corresponds to output terminal 76 shown in FIG. 2) being applied to a D to A converter 78. The signal terminal G1 provides a variable duty cycle output applied to inverter 140 and to the D to A converter 78 including integrating resistor 142 and capacitor 144 and to the positive input terminal of an operational amplifier 146 configured as a voltage follower and through current limiting resistor 81 to output terminal A which is commonly coupled to input terminal A of north/south winding 14 corresponding also to its output terminal 104. Similarly, the variable duty cycle output at G0 corresponding to terminal 77, shown also in FIG. 2, is coupled to an inverter circuit 150 to D to A converter 79 including integrated resistor 153 and capacitor 154 through a voltage following amplifier 156 and to current limiting resistor 83 to output terminal B coupled to input terminal B of east/west coil 15 which also corresponds to terminal 106. These signals are internally monitored by the microprocessor to provide digital signals containing the direction information contained by e1 and e2 voltages to provide display output information to display driver 80 through output terminals D0, SK, S0 and SI.

The temperature sensing thermistor 90 is coupled to input terminal L2 of microprocessor 75 by the voltage dividing interface circuit 92 including a voltage dividing resistor 160 coupled to the +Vcc supply and to thermistor 90 which has its opposite terminal coupled to ground. The junction of thermistor 90 and resistor 160 is coupled to an integrator including resistor 162 and capacitor 164 and to a digital comparator 166 whose output terminal is coupled to signal input terminal L2 of microprocessor 75. Comparator 166 includes a feedback resistor 168 and has its positive input terminal coupled to the output of voltage follower 130 of the D to A converter circuit coupled to output terminal G2 of the microprocessor by means of resistor 169.

Operating power for the microprocessor is applied through a voltage reducing network including a resistor 170 coupled to Vcc and having a bypass capacitor 172 coupled thereto and to ground. The regulated lower level voltage is applied to the Vdd input terminal of the microprocessor by Zener diode 174 coupled to ground through diode 176 to supply approximately 7.5 VDC operating voltage for the microprocessor. The output signal lines SK, S0, SI, and D0 through D3 are coupled to the display driver 80 and a non-volatile memory 87 comprising a NITRON NC7033LC chip in a conventional manner such that output data representative of vehicle direction and temperature is displayed on the dual display 35. Control inputs for actuating the microprocessor to display either or both temperature and vehicle direction as well as providing for calibration and variation correction is provided by switches 38, 39, 42 and 44 coupled to input terminals L7, L6, L5 and L4, respectively, of microprocessor 75 through interface circuit 85 comprising a pullup resistor for each input and commonly coupled to Vcc at one terminal and individually coupled to one end of the switches with the opposite terminal of the switches coupled to ground. Thus, when a switch is actuated, it will provide a logic "0" input signal and when not actuated, a logic "1" input signal is applied to the microprocessor. The reset input terminal of the microprocessor is coupled to Vcc through a resistor 178 bypassed by diode 179 and also to ground through capacitor 180 in a conventional manner. Having described the construction of the circuit forming the present invention, a description of the operation of the circuit first to provide the compass display function for the vehicle and then, the temperature controlling function is now presented in conjunction with the flow diagram of FIGS. 4 and 5.

OPERATION

The circuit of the present invention provides automatic calibration for compensation of the compass and variation correction for ease of use by the operator. When the system is first installed or, in the case of original equipment when the vehicle is delivered, the vehicle operator or the dealer positions the car facing in a magnetic north direction. This can be achieved by utilizing a magnetic compass to determine magnetic north and aligning the car in such direction. At the dealership level, the dealer will typically estalish this in a parking area for new vehicles incorporating this system of the present invention by painting or otherwise marking an area of the lot to indicate the direction of magnetic north. The operator then depresses the compass function switch 39 and simultaneously, using a ball point pen or the like, the calibration switch 42. In response to the simultaneous occurrence of these two switch closures, microprocessor 75 outputs at display 35 the display `SET N`, indicated by block 200 in FIG. 5. Also in response to this command, output G1 is supplied with a 50% duty cycle signal integrated by circuit 78. The output of integrator 60 and comparator 120 applied to input L1 of the microprocessor 75 is measured to determine its level. These steps are indicated by block 210 of the program flow diagram of FIG. 5 for the microprocessor. The voltage e1 is tested to ascertain whether it is 1/2 of Vcc or 4.5 volts in the preferred embodiment. Inasmuch as it is desired to provide a 4.5 volt as a reference level for a magnetic north heading as the output signal from integrator 60, if this voltage is other than 4.5 volts, compensation due to localized magnetic fields or ferromagnetic material in the vicinity of the flux-gate sensor is required. The voltage test is indicated by block 212 in FIG. 4, and typically, it will be something other than 1/2 Vcc. The voltage is then tested to determine whether it is higher or lower than 1/2 Vcc, as indicated by block 214, and if it is higher, the microprocessor decreases the duty cycle, as indicated by block 216, to provide a lower average output signal at output terminal G1 through integrator 78 and feedback resistor 81 tending to lower the voltage e1 by injecting a DC current through sense windings 14. If the measured voltage is less than 4.5 volts, as indicated by block 218, the duty cycle is increased with a reverse effort. In either event, a new duty cycle is supplied, as indicated by block 220, and the voltage again measured, as indicated by block 222. If the voltage does not equal 1/2 Vcc, the adjustment of duty cycle through blocks 214 through 220 is continued, as indicated by the loop including path 223. Once the voltage has reached the desired 4.5 level, indicating that a signal corresponding to magnetic north is being supplied from the output of the integrator circuit 60 to the microprocessor, and therefore, microprocessor will supply a north output digital signal to display 35. The display is then momentarily blanked and flashes, as indicated by blocks 224 and 226, and a new instructional display `SET W`, indicated by block 228, is provided to display 35. This indicates to the operator to commence the compensation procedure for the westerly direction requiring initially that the car be moved 90° to the west from its initial position. Naturally, if the test of block 212 indicates the voltage was initially 1/2 Vcc, no compensation for the north/south flux-gate sensing coil 14 is required. In such case, as indicated by line 213, the computer will, without requiring adjustment of the duty cycle and the feedback signal to coil 14 through resistor output `SET W`, indicated by block 228.

The vehicle operator, upon seeing the flashing `SET W` display, aligns the vehicle 90° from the magnetic north direction, and the microprocessor continuously checks the status of switch 42 to ascertain if the calibration switch has again been actuated. If not, the delay and blanking loop 231, 224 and 226 is repeated until such time as the operator depresses the calibration switch a second time for calibrating the the east/west direction. This continuous test of the calibration is indicated by block 230 in FIG. 4, and once the vehicle operator has actuated switch 42 a second time, microprocessor 75 provides a 50% duty cycle output on pin G0 for the east/west sensing coil and the signal at input L0 is tested. These steps are indicated by block 232 in FIG. 4, and in effect, the voltage at the output of integrator 62 is checked to ascertain whether or not it is equal to 1/2 Vcc, as indicated by block 234. Typically, as with the north/south compensation, the voltage will not equal to 1/2 Vcc, and the microprocessor then determines whether it was above or below 1/2 Vcc, as indicated by block 236. If the voltage is more than 1/2 Vcc, the duty cycle output is decreased, as indicated by block 238, to increase the negative feedback current through resistor 83 while if the output was less than 1/2 Vcc, the duty cycle output at pin G0 is increased, as indicated by block 240, to supply negative feedback current and allow the input voltage to increase. The new duty cycle output and voltage reading function is indicated by block 242 after which the voltage is again tested, as indicated by block 244, and if necessary, the testing and adjustment of duty cycle procedure is repeated by the loop including feedback line 243. Once the voltage is equal to 1/2 Vcc, the duty cycle information at outputs G1 and G0, stored in RAM memory contained within the microprocessor 75, is supplied to the associated non-volatile memory 87 coupled to outputs D0 -D3 and SK, S0 and SI of the microprocessor for permanent storage of this calibration or compass compensation information, as indicated by block 246. The program is then exited, as indicated by block 248. Naturally, if the duty cycle was initially correct and test 234 indicates the voltage was 1/2 Vcc initially, this information is stored in memory 87, as indicated by block 246, and the compensation program is exited, as indicated by line 245.

Thus, by effectively measuring the integrated DC levels e1 and e2, provided by sensing coils 14 and 15 of the flux-gate sensor 13, through the digitally processed duty cycle technique of the microprocessor, when the vehicle is aligned in magnetic north and subsequently magnetic west directions, duty cycle information for controlling the output display to read N and W, respectively, is determined and such control information is stored in non-volatile memory for use by the compass in providing a compensated output signal correcting for local magnetic fields or ferromagnetic material which interferes with the sensing of magnetic north by the flux-gate sensor, once installed, in a particular vehicle. In order to correct for magnetic variation, which is a geographical phenomena by which true north varies from magnetic north at different geographic locations, variation correction is provided. In the United States, for example, the true north direction in which highways are typically aligned and magnetic north may vary significantly. Twenty degrees of variance between the true and magnetic north headings exist on the coastal regions of the United States with an approximate 40° difference from coast to coast. In order to correct for this error, the system of the present invention provides a variation correction circuit and program, as seen in reference to FIGS. 3 and 5.

The vehicle operator, once the compass system has been calibrated for compensation of the compass, drives the vehicle on a road whose direction is known to be true north. The variation correction switch 44 is actuated and display 35 displays `TN` to the operator indicating the proper actuation of the variation correction entry signal, as indicated by block 300 in FIG. 5. Next, the microprocessor reads the input signals at input ports L0 and L1 and determines the actual display angle reading, as indicated by block 302. If the display angle information provided at input ports L0 and L1 are different than known signals to provide an exact 0° or `N` output display, the signals supplied to these input ports is representative of the variation angle, and a correction signal (corresponding to the variation angle) to the actual voltage measurement to provide a true north display output signal is generated by the microprocessor 75 and stored in the non-volatile memory 87, as indicated by block 302 in FIG. 5. Once this is done, the program is exited, as indicated by block 306, and normal compass operation is provided by the vehicle operator upon actuation of switch 39. The actual heading information provided by sensor 13 is corrected by the microprocessor which adds the determined and stored compass variation correction angle representative signal to the detected heading signal to provide a corrected display output signal.

During use, after the calibration and variation of the compass system has been achieved, the compass can be selectively used by actuation of switch 39 which upon a first actuation provides a continuous compass output display and deactivated upon a second actuation of the momentary push-button switch.

The temperature display provided by the system is activated by the momentary actuation of temperature switch 38 providing an input signal at port L7 of microprocessor 75 which then reads the input signal at port L2 comprising digitized temperature representative information from comparator 166 driven by sensor 90 and integrated variable duty cycle signals from output G2 of microprocessing 75. The ROM memory of microprocessor 75 includes preprogrammed temperature representative signals to correlate the signals provided at port L2 and provide a display output signal representing the temperature of the sensor 90. In the event a 38° F. or below temperature is detected by sensor 90, the microprocessor provides a flashing display output to display the work `ICE` alternately between the temperature display for a period of one minute to alert the operator that possible hazardous driving conditions may exist. The programming of the microprocessor 75 to provide this display output signal, as well as the temperature indicative display signals in response to the input sensed voltage, is conventional.

Thus, the system of the present invention provides the vehicle operator with a conveniently used and accurate octant heading compass display which provides N, NE, E, SE, S, SW, W, and NW displays as the vehicle heads in these directions. The microprocessor responds to signals from the flux-gate sensor 13 to change to a predetermined octant heading at an approximately 221/2° switch-over point to always display the closest heading detected by the flux-gate sensor.

It will become apparent to those skilled in the art that various modifications to the preferred embodiment as described herein can be made without departing from the spirit or scope thereof as defined by the appended claims.

Claims (26)

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
1. An electrical compass system for a vehicle, said system including sensing means for sensing a magnetic field and providing output signals representative thereof, circuit means coupled to said sensing means for providing display output signals, and display means coupled to said circuit means and responsive to said display output signals for displaying the sensed magnetic field; wherein the improvement comprises compensation means for correcting the sensed and displayed magnetic field for a steady state local magnetic field interference; said compensation means comprising:
means coupled to said circuit means for establishing a predetermined display output signal when said sensing means is positioned in predetermined alignment with a known magnetic field;
comparing means coupled to said sensing means and to said circuit means for comparing signals from said sensing means and said display output signals and applying a control signal to said circuit means when signals from said sensing means correspond to a direction which differs from said predetermined display output signal; and
means coupled to said circuit means and to said sensing means for applying a correction signal to said sensing means and said correction signal generated by said circuit means in response to said control signal from said comparing means to cause said predetermined display output signal to occur.
2. The system as defined in claim 1 wherein said means for establishing a predetermined display output signals comprises a controlled voltage source.
3. The system as defined in claim 1, wherein said sensing means is flux-gate sensor and said applying means is coupled to said controlled voltage source and to said sensor for applying a direct current correction signal to a winding of said sensor.
4. The system as defined in claim 3 wherein said controlled voltage source includes a variable duty cycle signal generator and integration circuit means for providing a direct current voltage having a level proportionate to the duty cycle output of said generator.
5. The system as defined in claim 4 wherein said comparing means and said generator are included in a microprocessor circuit.
6. The system as defined in claim 5 and further including means coupled to said circuit means for selectively storing a display output correction signal when the sensor is aligned in a predetermined true direction heading and for combining the display output signal and said correction signal to provide a true heading display signal to correct for geographic magnetic variation.
7. The system as defined in claim 6 wherein said storing means for said correction signal and said combining means includes a non-volatile memory coupled to said microprocessor.
8. The system as defined in claim 7 wherein said storing means includes switch means coupled to said microprocessor for providing a control signal when actuated by the vehicle operator for storing said correction signal when the vehicle and sensor mounted thereto is aligned in a known true direction.
9. A digital compass system for a vehicle comprising:
a magnetic field sensor;
a sensor circuit coupled to said sensor for providing output signals representative of the orientation of said sensor with respect to a magnetic field;
a microprocessor and interface circuit means coupling said microprocessor to said sensor circuit for providing display output signals representative of the magnetic direction of orientation of said sensor;
display means coupled to said microprocessor for displaying said magnetic direction; and
compensation circuit means including operator actuated switch means coupled to said microprocessor for supplying signals applied to said sensor to compensate for local magnetic field interference which otherwise causes said sensor to provide output signals which deviate from the actual magnetic orientation of said sensor with respect to the earth's magnetic field such that the actual magnetic orientation of said sensor will be displayed.
10. The system as defined in claim 9 wherein said sensor is a flux-gate sensor having a pair of sensing coils and said compensation circuit means includes a direct current feedback circuit coupled between said microprocessor and said sensing coils to change the output signals of said sensor and thus the display output signals to provide a first reference direction display when said sensor is aligned in a first magnetic reference direction and a second reference display when said sensor is aligned in a second magnetic reference direction.
11. The system as defined in claim 10 wherein said first and second reference direction are orthogonal with respect to each other.
12. The system as defined in claim 11 and further including means for selectively storing a display output correction signal when the sensor is aligned in a predetermined true direction heading and for combining the display output signal and said correction signal to provide a true heading display signal to correct for geographic magnetic variation.
13. The system as defined in claim 12 wherein said storing means for said correction signal and said combining means includes a non-volatile memory coupled to said microprocessor.
14. The system as defined in claim 13 wherein said storing means includes switch means coupled to said microprocessor for providing a control signal when actuated by the vehicle operator for storing said correction signal when the vehicle and sensor mounted thereto is aligned in a known true direction.
15. The system as defined in claim 9 wherein said display means includes an octant alpha display for displaying octant compass headings.
16. The system as defined in claim 9 and further including a temperature sensor and means coupling said temperature sensor to said microprocessor for supplying temperature representative signals to said microprocessor which compares said temperature representative signals with stored temperature display signals for providing temperature display output signals in response to said temperature representative signals.
17. The system as defined in claim 16 wherein said stored temperature display signals including a temperature warning signal and said microprocessor provides a temperature warning output signal when input temperature representative signals correspond to said temperature warning signal.
18. The system as defined in claim 17 wherein said display means includes a numeric display for displaying the sensed temperature.
19. A digital electrical compass system for a vehicle comprising:
an electrical magnetic field sensor for mounting to a vehicle;
a microprocessor coupled to said sensor and including memory circuit means programmed to respond to signals from said sensor to provide display output signals therefrom;
a compass calibration switch coupled to said microprocessor for providing a calibration command thereto when actuated to cause said microprocessor to supply a sensor correction signal applied to said sensor to provide a predetermined display output signal in response thereto when the vehicle is aligned in a predetermined magnetic position; and
display means coupled to said microprocessor for displaying the vehicle's heading.
20. The system as defined in claim 19 and further including a compass compensation switch coupled to said microprocessor for providing a command signal thereto when actuated to determine and store a variation correction signal when said sensor is aligned in a known true direction and for adding said correction signal to the display output signals to provide a true heading output display.
21. The system as defined in claim 20 and further including temperature sensing means coupled to said microprocessor for supplying signals thereto for providing a display of temperature sensed by said temperature sensor.
22. The system as defined in claim 21 wherein said microprocessor includes storage circuit means for storing a temperature alarm signal corresponding to a predetermined temperature and means for providing a temperature alarm signal applied to said display means when the sensed temperature reaches said predetermined temperature.
23. A digital control and display module for a vehicle comprising:
a housing for central mounting to a vehicle roof near the windshield and including a digital display means for providing temperature and compass heading information;
temperature and compass control switches mounted to said housing; and
an electrical circuit including temperature sensing means and magnetic field sensing means, said circuit coupled to said switch means and to said display means and mounted within said housing for selectively displaying to a vehicle operator temperature and compass heading information.
24. A digital electrical compass system for a vehicle comprising:
an electrical magnetic field sensor for mounting to a vehicle;
circuit means coupled to said sensor and responsive to signals from said sensor to provide display output signals representative of the position of said sensor with respect to a magnetic field; said circuit means including means for providing a sensor correction signal applied to said sensor to provide a predetermined display output signal in response thereto when the vehicle is aligned in a predetermined position with respect to the earth's magnetic field; and means for providing a variation correction signal when said sensor is aligned in a known true direction, said variation correction signals employed to modify direction information signals from said sensor to provide said display output signals which represent the true heading of the vehicle; and
display means coupled to said circuit means and responsive to said display output signals for displaying the vehicle's true heading.
25. The system as defined in claim 24 wherein said circuit means comprises a microprocessor.
26. A digital compass system for a vehicle comprising:
a magnetic field sensor;
circuit means coupled to said sensor for providing output signals repesentative of the orientation of said sensor with respect to a magnetic field, said circuit means including operator actuated switch means to effect operation of said compass system; and
display means coupled to said circuit means for displaying the detected magnetic direction, said display mens also providing operator prompting information in response to the actuation of said operator actuated switch means.
US06478364 1983-03-24 1983-03-24 Electrical control system Expired - Lifetime US4546551A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US06478364 US4546551A (en) 1983-03-24 1983-03-24 Electrical control system

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US06478364 US4546551A (en) 1983-03-24 1983-03-24 Electrical control system
CA 439170 CA1198890A (en) 1983-03-24 1983-10-18 Electrical control system
ES527060A ES527060A0 (en) 1983-03-24 1983-11-07 An electric device for a vehicle compass
JP1954084A JPH055043B2 (en) 1983-03-24 1984-02-07
EP19840301988 EP0120691B1 (en) 1983-03-24 1984-03-23 Electrical compass
DE19843485691 DE3485691D1 (en) 1983-03-24 1984-03-23 Electric compass.

Publications (1)

Publication Number Publication Date
US4546551A true US4546551A (en) 1985-10-15

Family

ID=23899641

Family Applications (1)

Application Number Title Priority Date Filing Date
US06478364 Expired - Lifetime US4546551A (en) 1983-03-24 1983-03-24 Electrical control system

Country Status (6)

Country Link
US (1) US4546551A (en)
EP (1) EP0120691B1 (en)
JP (1) JPH055043B2 (en)
CA (1) CA1198890A (en)
DE (1) DE3485691D1 (en)
ES (1) ES527060A0 (en)

Cited By (125)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4622843A (en) * 1985-12-27 1986-11-18 Hormel Ronald F Simplified calibration technique and auto ranging circuit for an electronic compass control circuit
US4677381A (en) * 1984-10-19 1987-06-30 Prince Corporation Flux-gate sensor electrical drive method and circuit
EP0234823A2 (en) * 1986-02-13 1987-09-02 Prince Corporation Sun Shield System
US4750349A (en) * 1985-12-27 1988-06-14 Chrysler Motors Corporation Microcomputer controlled quick ranging technique and digital filter
US4782453A (en) * 1985-09-27 1988-11-01 Robert Bosch Gmbh Method of determining the location of a navigational magnetic field sensor in a vehicle
US4783110A (en) * 1988-01-28 1988-11-08 Prince Corporation Console mounting system
US4807462A (en) * 1987-04-03 1989-02-28 Chrysler Motors Corporation Method for performing automatic calibrations in an electronic compass
US4862594A (en) * 1987-11-04 1989-09-05 Donnelly Corporation Magnetic compass system for a vehicle
US4887358A (en) * 1988-04-20 1989-12-19 Insik Kang Electronic compass
US5046260A (en) * 1987-02-17 1991-09-10 Heinz Wellhausen Electronic compass
US5090231A (en) * 1988-10-07 1992-02-25 Gallagher Lawrence W Electronic compass system
US5161311A (en) * 1990-08-29 1992-11-10 Alps Electric Inc. Calibration and compensation of an electronic compass system
US5187872A (en) * 1992-04-02 1993-02-23 Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of Communications Automatic calibration of magnetic compasses
US5253424A (en) * 1991-12-27 1993-10-19 Chrysler Corporation Flux-gate sensor mounting and method
US5297063A (en) * 1991-12-27 1994-03-22 Chrysler Corporation Method for selecting calibration data for an auto-calibrating compass
US5297065A (en) * 1991-12-27 1994-03-22 Chrysler Corporation Magnetic transient detection and calibration technique for an auto-calibrating compass
US5323336A (en) * 1991-12-27 1994-06-21 Chrysler Corporation Noise removal method for an electronic compass
US5333110A (en) * 1991-12-27 1994-07-26 Chrysler Corporation Electronic magnetic compass system and method for interpreting directions of a vehicle
US5351204A (en) * 1991-12-27 1994-09-27 Chrysler Corporation Scaling system and method for an electronic compass
US5353241A (en) * 1991-12-27 1994-10-04 Al Attar Rafi A Shifting system and method for an electronic compass system
US5390122A (en) * 1993-05-07 1995-02-14 Lectron Products, Inc. Method and apparatus for calibrating a vehicle compass system
US5415554A (en) * 1993-10-28 1995-05-16 Prince Corporation Trim panel connecting link
US5469298A (en) * 1991-08-14 1995-11-21 Prince Corporation Reflective display at infinity
US5475366A (en) * 1988-12-05 1995-12-12 Prince Corporation Electrical control system for vehicle options
US5510791A (en) * 1994-06-28 1996-04-23 Gebr. Happich Gmbh Remote control unit for installation in vehicle
US5511319A (en) * 1994-08-29 1996-04-30 Prince Corporation Vehicle compass correction circuit
US5526022A (en) * 1993-01-06 1996-06-11 Virtual I/O, Inc. Sourceless orientation sensor
US5614885A (en) * 1988-12-05 1997-03-25 Prince Corporation Electrical control system for vehicle options
US5654686A (en) * 1995-07-26 1997-08-05 Prince Corporation Electronic vehicle theft detection system employing a magnetic field sensor
US5689445A (en) * 1996-04-05 1997-11-18 Rowe-Deines Instruments Incorporated Electronic compass and attitude sensing system
US5737226A (en) * 1995-06-05 1998-04-07 Prince Corporation Vehicle compass system with automatic calibration
US5761094A (en) * 1996-01-18 1998-06-02 Prince Corporation Vehicle compass system
US5828984A (en) * 1991-12-27 1998-10-27 Chrysler Corporation Data processing method for an electronic compass system
US5878370A (en) * 1995-12-01 1999-03-02 Prince Corporation Vehicle compass system with variable resolution
US5940120A (en) * 1995-10-20 1999-08-17 Prince Corporation Vanity console
US5991085A (en) * 1995-04-21 1999-11-23 I-O Display Systems Llc Head-mounted personal visual display apparatus with image generator and holder
US6044315A (en) * 1996-06-13 2000-03-28 Prince Corporation Vehicle non-volatile memory system
US6301794B1 (en) 1999-05-27 2001-10-16 Johnson Controls, Inc. Vehicle compass system with continuous automatic calibration
US6356851B1 (en) 1999-02-05 2002-03-12 Delphi Technologies, Inc. Accelerated calibration for electronic compass module
US6472993B1 (en) 2001-10-16 2002-10-29 Pittway Corp. Singular housing window or door intrusion detector using earth magnetic field sensor
US6513252B1 (en) 1999-04-08 2003-02-04 Donnelly Corporation Vehicle compass compensation
US20030236622A1 (en) * 2002-04-25 2003-12-25 Kenneth Schofield Imaging system for vehicle
US20040032675A1 (en) * 2002-06-06 2004-02-19 Weller Andrew D. Interior rearview mirror system with compass
US20040128065A1 (en) * 2000-03-09 2004-07-01 Taylor David W. Vehicle navigation system for use with a telematics system
US20040160313A1 (en) * 1998-04-08 2004-08-19 Donnelly Corporation Wireless communication system
US6817643B2 (en) 2002-03-28 2004-11-16 Lear Corporation Vehicle console assembly
US20040236510A1 (en) * 2002-03-01 2004-11-25 Ockerse Harold C. Electronic compass system
US20040254727A1 (en) * 2002-03-01 2004-12-16 Ockerse Harold C. Electronic compass system
US20050166410A1 (en) * 2004-02-04 2005-08-04 Lars Richter Machine for simultaneously measuring and compounding angles about multiple axes
US20060132939A1 (en) * 2002-06-06 2006-06-22 Blank Rodney K Interior rearview mirror system with compass
US20070118280A1 (en) * 1999-04-29 2007-05-24 Donnelly Corporation Navigation system for a vehicle
US20070162229A1 (en) * 1999-11-24 2007-07-12 Donnelly Corporation, A Corporation Of The State Of Michigan Navigation system for a vehicle
US7494231B2 (en) 1994-05-05 2009-02-24 Donnelly Corporation Vehicular signal mirror
US7526103B2 (en) 2004-04-15 2009-04-28 Donnelly Corporation Imaging system for vehicle
US7579939B2 (en) 1998-01-07 2009-08-25 Donnelly Corporation Video mirror system suitable for use in a vehicle
US7586666B2 (en) 2002-09-20 2009-09-08 Donnelly Corp. Interior rearview mirror system for a vehicle
US7589883B2 (en) 1994-05-05 2009-09-15 Donnelly Corporation Vehicular exterior mirror
US7619508B2 (en) 2001-01-23 2009-11-17 Donnelly Corporation Video mirror system for a vehicle
US7667579B2 (en) 1998-02-18 2010-02-23 Donnelly Corporation Interior mirror system
US7716008B2 (en) 2007-01-19 2010-05-11 Nintendo Co., Ltd. Acceleration data processing program, and storage medium, and acceleration data processing apparatus for use with the same
US7728721B2 (en) 1998-01-07 2010-06-01 Donnelly Corporation Accessory system suitable for use in a vehicle
US7774155B2 (en) 2006-03-10 2010-08-10 Nintendo Co., Ltd. Accelerometer-based controller
US7826123B2 (en) 2002-09-20 2010-11-02 Donnelly Corporation Vehicular interior electrochromic rearview mirror assembly
US7855755B2 (en) 2005-11-01 2010-12-21 Donnelly Corporation Interior rearview mirror assembly with display
US7864399B2 (en) 2002-09-20 2011-01-04 Donnelly Corporation Reflective mirror assembly
US7888629B2 (en) 1998-01-07 2011-02-15 Donnelly Corporation Vehicular accessory mounting system with a forwardly-viewing camera
US7898719B2 (en) 2003-10-02 2011-03-01 Donnelly Corporation Rearview mirror assembly for vehicle
US7906756B2 (en) 2002-05-03 2011-03-15 Donnelly Corporation Vehicle rearview mirror system
US7914188B2 (en) 1997-08-25 2011-03-29 Donnelly Corporation Interior rearview mirror system for a vehicle
US7927216B2 (en) 2005-09-15 2011-04-19 Nintendo Co., Ltd. Video game system with wireless modular handheld controller
US7926960B2 (en) 1999-11-24 2011-04-19 Donnelly Corporation Interior rearview mirror system for vehicle
US8019505B2 (en) 2003-10-14 2011-09-13 Donnelly Corporation Vehicle information display
US8049640B2 (en) 2003-05-19 2011-11-01 Donnelly Corporation Mirror assembly for vehicle
US8070332B2 (en) 2007-07-12 2011-12-06 Magna Electronics Inc. Automatic lighting system with adaptive function
US8083386B2 (en) 2001-01-23 2011-12-27 Donnelly Corporation Interior rearview mirror assembly with display device
US8089458B2 (en) 2000-02-22 2012-01-03 Creative Kingdoms, Llc Toy devices and methods for providing an interactive play experience
EP2420408A1 (en) 2000-03-20 2012-02-22 Gentex Corporation System for controlling exterior vehicle lights
US8154418B2 (en) 2008-03-31 2012-04-10 Magna Mirrors Of America, Inc. Interior rearview mirror system
US8157651B2 (en) 2005-09-12 2012-04-17 Nintendo Co., Ltd. Information processing program
US8189871B2 (en) 2004-09-30 2012-05-29 Donnelly Corporation Vision system for vehicle
US8194133B2 (en) 2000-03-02 2012-06-05 Donnelly Corporation Vehicular video mirror system
US8203440B2 (en) 1993-02-26 2012-06-19 Donnelly Corporation Vehicular vision system
US8217830B2 (en) 2007-01-25 2012-07-10 Magna Electronics Inc. Forward facing sensing system for a vehicle
US8226493B2 (en) 2002-08-01 2012-07-24 Creative Kingdoms, Llc Interactive play devices for water play attractions
US8267786B2 (en) 2005-08-24 2012-09-18 Nintendo Co., Ltd. Game controller and game system
US8288711B2 (en) 1998-01-07 2012-10-16 Donnelly Corporation Interior rearview mirror system with forwardly-viewing camera and a control
US8294975B2 (en) 1997-08-25 2012-10-23 Donnelly Corporation Automotive rearview mirror assembly
US8308563B2 (en) 2005-08-30 2012-11-13 Nintendo Co., Ltd. Game system and storage medium having game program stored thereon
US8313379B2 (en) 2005-08-22 2012-11-20 Nintendo Co., Ltd. Video game system with wireless modular handheld controller
US8409003B2 (en) 2005-08-24 2013-04-02 Nintendo Co., Ltd. Game controller and game system
US8446470B2 (en) 2007-10-04 2013-05-21 Magna Electronics, Inc. Combined RGB and IR imaging sensor
US8451107B2 (en) 2007-09-11 2013-05-28 Magna Electronics, Inc. Imaging system for vehicle
US8462204B2 (en) 1995-05-22 2013-06-11 Donnelly Corporation Vehicular vision system
US8475275B2 (en) 2000-02-22 2013-07-02 Creative Kingdoms, Llc Interactive toys and games connecting physical and virtual play environments
US8503062B2 (en) 2005-05-16 2013-08-06 Donnelly Corporation Rearview mirror element assembly for vehicle
DE112011103834T5 (en) 2010-11-19 2013-09-05 Magna Electronics, Inc. Lane departure warning and lane centering
US8608535B2 (en) 2002-04-05 2013-12-17 Mq Gaming, Llc Systems and methods for providing an interactive game
US8629768B2 (en) 1999-08-12 2014-01-14 Donnelly Corporation Vehicle vision system
US8636393B2 (en) 2006-08-11 2014-01-28 Magna Electronics Inc. Driver assistance system for vehicle
US8637801B2 (en) 1996-03-25 2014-01-28 Magna Electronics Inc. Driver assistance system for a vehicle
US8665079B2 (en) 2002-05-03 2014-03-04 Magna Electronics Inc. Vision system for vehicle
US8702515B2 (en) 2002-04-05 2014-04-22 Mq Gaming, Llc Multi-platform gaming system using RFID-tagged toys
US8708821B2 (en) 2000-02-22 2014-04-29 Creative Kingdoms, Llc Systems and methods for providing interactive game play
US8753165B2 (en) 2000-10-20 2014-06-17 Mq Gaming, Llc Wireless toy systems and methods for interactive entertainment
US8758136B2 (en) 1999-02-26 2014-06-24 Mq Gaming, Llc Multi-platform gaming systems and methods
US8874317B2 (en) 2009-07-27 2014-10-28 Magna Electronics Inc. Parking assist system
US8890955B2 (en) 2010-02-10 2014-11-18 Magna Mirrors Of America, Inc. Adaptable wireless vehicle vision system based on wireless communication error
US9011248B2 (en) 2005-08-22 2015-04-21 Nintendo Co., Ltd. Game operating device
US9014904B2 (en) 2004-12-23 2015-04-21 Magna Electronics Inc. Driver assistance system for vehicle
US9018577B2 (en) 2007-08-17 2015-04-28 Magna Electronics Inc. Vehicular imaging system with camera misalignment correction and capturing image data at different resolution levels dependent on distance to object in field of view
US9041806B2 (en) 2009-09-01 2015-05-26 Magna Electronics Inc. Imaging and display system for vehicle
US9085261B2 (en) 2011-01-26 2015-07-21 Magna Electronics Inc. Rear vision system with trailer angle detection
US9117123B2 (en) 2010-07-05 2015-08-25 Magna Electronics Inc. Vehicular rear view camera display system with lifecheck function
US9126525B2 (en) 2009-02-27 2015-09-08 Magna Electronics Inc. Alert system for vehicle
US9191574B2 (en) 2001-07-31 2015-11-17 Magna Electronics Inc. Vehicular vision system
US9245448B2 (en) 2001-07-31 2016-01-26 Magna Electronics Inc. Driver assistance system for a vehicle
US9264672B2 (en) 2010-12-22 2016-02-16 Magna Mirrors Of America, Inc. Vision display system for vehicle
US9446319B2 (en) 2003-03-25 2016-09-20 Mq Gaming, Llc Interactive gaming toy
US9446713B2 (en) 2012-09-26 2016-09-20 Magna Electronics Inc. Trailer angle detection system
US9487144B2 (en) 2008-10-16 2016-11-08 Magna Mirrors Of America, Inc. Interior mirror assembly with display
US9495876B2 (en) 2009-07-27 2016-11-15 Magna Electronics Inc. Vehicular camera with on-board microcontroller
US9558409B2 (en) 2012-09-26 2017-01-31 Magna Electronics Inc. Vehicle vision system with trailer angle detection
US9587942B2 (en) 2014-04-01 2017-03-07 Magna Mirrors Of America, Inc. Vehicle compass system with heated windshield compensation
US9598016B2 (en) 2010-10-15 2017-03-21 Magna Mirrors Of America, Inc. Interior rearview mirror assembly
US9900522B2 (en) 2010-12-01 2018-02-20 Magna Electronics Inc. System and method of establishing a multi-camera image using pixel remapping

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61502211A (en) * 1984-05-22 1986-10-02
JPH0235983U (en) * 1988-08-26 1990-03-08
JPH03170014A (en) * 1989-11-28 1991-07-23 Mitsubishi Electric Corp Azimuth measuring instrument
DE4111171C1 (en) * 1991-04-06 1992-05-27 Mannesmann Kienzle Gmbh, 7730 Villingen-Schwenningen, De
ES2070702B1 (en) * 1992-12-31 1997-03-01 Alcatel Standard Electrica Magnetic field sensor device.

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2852859A (en) * 1958-09-23 A-axis
US3744312A (en) * 1971-06-02 1973-07-10 Smiths Industries Ltd Navigation apparatus
US3903610A (en) * 1972-08-18 1975-09-09 North Atlantic Industries Apparatus for measuring magnetic field direction
US3991361A (en) * 1975-03-27 1976-11-09 Westinghouse Electric Corporation Semi-automatic compass calibrator apparatus for a vehicle mounted flux gate compass system to cancel out effect of local magnetic disturbances
US4024382A (en) * 1975-09-08 1977-05-17 The Laitram Corporation Loran compensated magnetic compass
US4030204A (en) * 1974-03-18 1977-06-21 Edwards Robert A Remote indicating solid state magnetic sensor
US4112755A (en) * 1976-12-20 1978-09-12 Gerald Leslie Sullivan "Strapdown" induction compass transmitter with means to compensate for heading errors during turns and during dives and climbs due to the vertical component of the Earth's magnetic field and due to two cycle error
US4179741A (en) * 1976-08-26 1979-12-18 C.I.E.R. Compagnia Importazioni Esportazioni Rappresentanze S.R.L. Magnetic compasses
US4277751A (en) * 1978-09-29 1981-07-07 Neil Brown Instruments Systems, Inc. Low-power magnetometer circuit with constant current drive
US4336596A (en) * 1978-07-24 1982-06-22 E-Systems, Inc. Method and apparatus for electronically rotating a heading signal
JPS57116211A (en) * 1981-01-09 1982-07-20 Mitsubishi Electric Corp Measuring device for direction
US4373271A (en) * 1980-12-11 1983-02-15 General Motors Corporation Solid state compass
US4413424A (en) * 1980-10-20 1983-11-08 Nippondenso Co., Ltd. Azimuth determinating apparatus
US4414753A (en) * 1980-06-05 1983-11-15 Crouzet Process for compensating the magnetic disturbances in the determination of a magnetic heading, and devices for carrying out this process
US4416067A (en) * 1981-06-11 1983-11-22 Siemens Aktiengesellschaft Correction method and device for a magnetic field probe
US4429469A (en) * 1980-11-13 1984-02-07 Alps Electric Co., Ltd. Direction detection apparatus
US4445279A (en) * 1981-08-13 1984-05-01 Alps Electric Co., Ltd. Magnetic course detector

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5744412B2 (en) * 1977-06-30 1982-09-21
JPS5744412U (en) * 1980-08-28 1982-03-11
JPS5766307A (en) * 1980-10-09 1982-04-22 Mitsubishi Electric Corp Azimuth measuring device

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2852859A (en) * 1958-09-23 A-axis
US3744312A (en) * 1971-06-02 1973-07-10 Smiths Industries Ltd Navigation apparatus
US3903610A (en) * 1972-08-18 1975-09-09 North Atlantic Industries Apparatus for measuring magnetic field direction
US4030204A (en) * 1974-03-18 1977-06-21 Edwards Robert A Remote indicating solid state magnetic sensor
US3991361A (en) * 1975-03-27 1976-11-09 Westinghouse Electric Corporation Semi-automatic compass calibrator apparatus for a vehicle mounted flux gate compass system to cancel out effect of local magnetic disturbances
US4024382A (en) * 1975-09-08 1977-05-17 The Laitram Corporation Loran compensated magnetic compass
US4179741A (en) * 1976-08-26 1979-12-18 C.I.E.R. Compagnia Importazioni Esportazioni Rappresentanze S.R.L. Magnetic compasses
US4112755A (en) * 1976-12-20 1978-09-12 Gerald Leslie Sullivan "Strapdown" induction compass transmitter with means to compensate for heading errors during turns and during dives and climbs due to the vertical component of the Earth's magnetic field and due to two cycle error
US4336596A (en) * 1978-07-24 1982-06-22 E-Systems, Inc. Method and apparatus for electronically rotating a heading signal
US4277751A (en) * 1978-09-29 1981-07-07 Neil Brown Instruments Systems, Inc. Low-power magnetometer circuit with constant current drive
US4414753A (en) * 1980-06-05 1983-11-15 Crouzet Process for compensating the magnetic disturbances in the determination of a magnetic heading, and devices for carrying out this process
US4413424A (en) * 1980-10-20 1983-11-08 Nippondenso Co., Ltd. Azimuth determinating apparatus
US4429469A (en) * 1980-11-13 1984-02-07 Alps Electric Co., Ltd. Direction detection apparatus
US4373271A (en) * 1980-12-11 1983-02-15 General Motors Corporation Solid state compass
JPS57116211A (en) * 1981-01-09 1982-07-20 Mitsubishi Electric Corp Measuring device for direction
US4416067A (en) * 1981-06-11 1983-11-22 Siemens Aktiengesellschaft Correction method and device for a magnetic field probe
US4445279A (en) * 1981-08-13 1984-05-01 Alps Electric Co., Ltd. Magnetic course detector

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Magnetic Field Sensor and Its Application to Automobiles, by Hisatsugu Itoh, 1980 SAE paper, SAE/SP 80/458. *
Magnetic Field Sensor and Its Application to Automobiles, by Hisatsugu Itoh, 1980 SAE paper, SAE/SP-80/458.

Cited By (392)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4677381A (en) * 1984-10-19 1987-06-30 Prince Corporation Flux-gate sensor electrical drive method and circuit
US4782453A (en) * 1985-09-27 1988-11-01 Robert Bosch Gmbh Method of determining the location of a navigational magnetic field sensor in a vehicle
US4622843A (en) * 1985-12-27 1986-11-18 Hormel Ronald F Simplified calibration technique and auto ranging circuit for an electronic compass control circuit
US4720992A (en) * 1985-12-27 1988-01-26 Chrysler Motors Corporation Calibration sequence and method for an electronic compass
US4750349A (en) * 1985-12-27 1988-06-14 Chrysler Motors Corporation Microcomputer controlled quick ranging technique and digital filter
EP0234823A2 (en) * 1986-02-13 1987-09-02 Prince Corporation Sun Shield System
EP0234823A3 (en) * 1986-02-13 1989-05-31 Prince Corporation sun shield system
US5046260A (en) * 1987-02-17 1991-09-10 Heinz Wellhausen Electronic compass
US4807462A (en) * 1987-04-03 1989-02-28 Chrysler Motors Corporation Method for performing automatic calibrations in an electronic compass
US4862594A (en) * 1987-11-04 1989-09-05 Donnelly Corporation Magnetic compass system for a vehicle
US4783110A (en) * 1988-01-28 1988-11-08 Prince Corporation Console mounting system
US4887358A (en) * 1988-04-20 1989-12-19 Insik Kang Electronic compass
US5090231A (en) * 1988-10-07 1992-02-25 Gallagher Lawrence W Electronic compass system
US5699044A (en) * 1988-12-05 1997-12-16 Prince Corporation Electrical control system for vehicle options
US5691848A (en) * 1988-12-05 1997-11-25 Prince Corporation Electrical control system for vehicle options
US5475366A (en) * 1988-12-05 1995-12-12 Prince Corporation Electrical control system for vehicle options
US5661455A (en) * 1988-12-05 1997-08-26 Prince Corporation Electrical control system for vehicle options
US5614885A (en) * 1988-12-05 1997-03-25 Prince Corporation Electrical control system for vehicle options
US5161311A (en) * 1990-08-29 1992-11-10 Alps Electric Inc. Calibration and compensation of an electronic compass system
US5469298A (en) * 1991-08-14 1995-11-21 Prince Corporation Reflective display at infinity
US5333110A (en) * 1991-12-27 1994-07-26 Chrysler Corporation Electronic magnetic compass system and method for interpreting directions of a vehicle
US5353241A (en) * 1991-12-27 1994-10-04 Al Attar Rafi A Shifting system and method for an electronic compass system
US5297063A (en) * 1991-12-27 1994-03-22 Chrysler Corporation Method for selecting calibration data for an auto-calibrating compass
US5828984A (en) * 1991-12-27 1998-10-27 Chrysler Corporation Data processing method for an electronic compass system
US5323336A (en) * 1991-12-27 1994-06-21 Chrysler Corporation Noise removal method for an electronic compass
US5253424A (en) * 1991-12-27 1993-10-19 Chrysler Corporation Flux-gate sensor mounting and method
US5351204A (en) * 1991-12-27 1994-09-27 Chrysler Corporation Scaling system and method for an electronic compass
US5297065A (en) * 1991-12-27 1994-03-22 Chrysler Corporation Magnetic transient detection and calibration technique for an auto-calibrating compass
US5187872A (en) * 1992-04-02 1993-02-23 Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of Communications Automatic calibration of magnetic compasses
US5526022A (en) * 1993-01-06 1996-06-11 Virtual I/O, Inc. Sourceless orientation sensor
US8314689B2 (en) 1993-02-26 2012-11-20 Donnelly Corporation Vehicular vision system
US8203440B2 (en) 1993-02-26 2012-06-19 Donnelly Corporation Vehicular vision system
US8917169B2 (en) 1993-02-26 2014-12-23 Magna Electronics Inc. Vehicular vision system
US8599001B2 (en) 1993-02-26 2013-12-03 Magna Electronics Inc. Vehicular vision system
US5390122A (en) * 1993-05-07 1995-02-14 Lectron Products, Inc. Method and apparatus for calibrating a vehicle compass system
US5415554A (en) * 1993-10-28 1995-05-16 Prince Corporation Trim panel connecting link
US7543947B2 (en) 1994-05-05 2009-06-09 Donnelly Corporation Vehicular rearview mirror element having a display-on-demand display
US8164817B2 (en) 1994-05-05 2012-04-24 Donnelly Corporation Method of forming a mirrored bent cut glass shape for vehicular exterior rearview mirror assembly
US7572017B2 (en) 1994-05-05 2009-08-11 Donnelly Corporation Signal mirror system for a vehicle
US8511841B2 (en) 1994-05-05 2013-08-20 Donnelly Corporation Vehicular blind spot indicator mirror
US7589883B2 (en) 1994-05-05 2009-09-15 Donnelly Corporation Vehicular exterior mirror
US7771061B2 (en) 1994-05-05 2010-08-10 Donnelly Corporation Display mirror assembly suitable for use in a vehicle
US7821697B2 (en) 1994-05-05 2010-10-26 Donnelly Corporation Exterior reflective mirror element for a vehicular rearview mirror assembly
US7643200B2 (en) 1994-05-05 2010-01-05 Donnelly Corp. Exterior reflective mirror element for a vehicle rearview mirror assembly
US7871169B2 (en) 1994-05-05 2011-01-18 Donnelly Corporation Vehicular signal mirror
US7494231B2 (en) 1994-05-05 2009-02-24 Donnelly Corporation Vehicular signal mirror
US5510791A (en) * 1994-06-28 1996-04-23 Gebr. Happich Gmbh Remote control unit for installation in vehicle
US5511319A (en) * 1994-08-29 1996-04-30 Prince Corporation Vehicle compass correction circuit
US5991085A (en) * 1995-04-21 1999-11-23 I-O Display Systems Llc Head-mounted personal visual display apparatus with image generator and holder
US8559093B2 (en) 1995-04-27 2013-10-15 Donnelly Corporation Electrochromic mirror reflective element for vehicular rearview mirror assembly
US8462204B2 (en) 1995-05-22 2013-06-11 Donnelly Corporation Vehicular vision system
US5737226A (en) * 1995-06-05 1998-04-07 Prince Corporation Vehicle compass system with automatic calibration
US5654686A (en) * 1995-07-26 1997-08-05 Prince Corporation Electronic vehicle theft detection system employing a magnetic field sensor
US5940120A (en) * 1995-10-20 1999-08-17 Prince Corporation Vanity console
US5878370A (en) * 1995-12-01 1999-03-02 Prince Corporation Vehicle compass system with variable resolution
US5761094A (en) * 1996-01-18 1998-06-02 Prince Corporation Vehicle compass system
US8993951B2 (en) 1996-03-25 2015-03-31 Magna Electronics Inc. Driver assistance system for a vehicle
US8637801B2 (en) 1996-03-25 2014-01-28 Magna Electronics Inc. Driver assistance system for a vehicle
US5689445A (en) * 1996-04-05 1997-11-18 Rowe-Deines Instruments Incorporated Electronic compass and attitude sensing system
US8643724B2 (en) 1996-05-22 2014-02-04 Magna Electronics Inc. Multi-camera vision system for a vehicle
US9131120B2 (en) 1996-05-22 2015-09-08 Magna Electronics Inc. Multi-camera vision system for a vehicle
US8842176B2 (en) 1996-05-22 2014-09-23 Donnelly Corporation Automatic vehicle exterior light control
US6044315A (en) * 1996-06-13 2000-03-28 Prince Corporation Vehicle non-volatile memory system
US7914188B2 (en) 1997-08-25 2011-03-29 Donnelly Corporation Interior rearview mirror system for a vehicle
US8309907B2 (en) 1997-08-25 2012-11-13 Donnelly Corporation Accessory system suitable for use in a vehicle and accommodating a rain sensor
US8610992B2 (en) 1997-08-25 2013-12-17 Donnelly Corporation Variable transmission window
US7898398B2 (en) 1997-08-25 2011-03-01 Donnelly Corporation Interior mirror system
US8063753B2 (en) 1997-08-25 2011-11-22 Donnelly Corporation Interior rearview mirror system
US8100568B2 (en) 1997-08-25 2012-01-24 Donnelly Corporation Interior rearview mirror system for a vehicle
US8267559B2 (en) 1997-08-25 2012-09-18 Donnelly Corporation Interior rearview mirror assembly for a vehicle
US8294975B2 (en) 1997-08-25 2012-10-23 Donnelly Corporation Automotive rearview mirror assembly
US8779910B2 (en) 1997-08-25 2014-07-15 Donnelly Corporation Interior rearview mirror system
US7579939B2 (en) 1998-01-07 2009-08-25 Donnelly Corporation Video mirror system suitable for use in a vehicle
US8325028B2 (en) 1998-01-07 2012-12-04 Donnelly Corporation Interior rearview mirror system
US8134117B2 (en) 1998-01-07 2012-03-13 Donnelly Corporation Vehicular having a camera, a rain sensor and a single-ball interior electrochromic mirror assembly attached at an attachment element
US8288711B2 (en) 1998-01-07 2012-10-16 Donnelly Corporation Interior rearview mirror system with forwardly-viewing camera and a control
US7916009B2 (en) 1998-01-07 2011-03-29 Donnelly Corporation Accessory mounting system suitable for use in a vehicle
US7994471B2 (en) 1998-01-07 2011-08-09 Donnelly Corporation Interior rearview mirror system with forwardly-viewing camera
US7728721B2 (en) 1998-01-07 2010-06-01 Donnelly Corporation Accessory system suitable for use in a vehicle
US8094002B2 (en) 1998-01-07 2012-01-10 Donnelly Corporation Interior rearview mirror system
US7579940B2 (en) 1998-01-07 2009-08-25 Donnelly Corporation Information display system for a vehicle
US7888629B2 (en) 1998-01-07 2011-02-15 Donnelly Corporation Vehicular accessory mounting system with a forwardly-viewing camera
US7667579B2 (en) 1998-02-18 2010-02-23 Donnelly Corporation Interior mirror system
US8884788B2 (en) 1998-04-08 2014-11-11 Donnelly Corporation Automotive communication system
US20080174414A1 (en) * 1998-04-08 2008-07-24 Donnelly Corporation Vehicular communication system
US20050156714A1 (en) * 1998-04-08 2005-07-21 Donnelly Corporation Vehicular communication system
US7583204B2 (en) 1998-04-08 2009-09-01 Donnelly Corporation Wireless communication system in a vehicle
US7382289B2 (en) 1998-04-08 2008-06-03 Donnelly Corporation Vehicular communication system
US8525703B2 (en) 1998-04-08 2013-09-03 Donnelly Corporation Interior rearview mirror system
US7916043B2 (en) 1998-04-08 2011-03-29 Donnelly Corporation Vehicle communication system
US9221399B2 (en) 1998-04-08 2015-12-29 Magna Mirrors Of America, Inc. Automotive communication system
US6909361B2 (en) 1998-04-08 2005-06-21 Donnelly Corporation Wireless communication system
US9481306B2 (en) 1998-04-08 2016-11-01 Donnelly Corporation Automotive communication system
US20040160313A1 (en) * 1998-04-08 2004-08-19 Donnelly Corporation Wireless communication system
US20090318084A1 (en) * 1998-04-08 2009-12-24 Donnelly Corporation Vehicle communication system
US6356851B1 (en) 1999-02-05 2002-03-12 Delphi Technologies, Inc. Accelerated calibration for electronic compass module
US9861887B1 (en) 1999-02-26 2018-01-09 Mq Gaming, Llc Multi-platform gaming systems and methods
US9468854B2 (en) 1999-02-26 2016-10-18 Mq Gaming, Llc Multi-platform gaming systems and methods
US8888576B2 (en) 1999-02-26 2014-11-18 Mq Gaming, Llc Multi-media interactive play system
US9186585B2 (en) 1999-02-26 2015-11-17 Mq Gaming, Llc Multi-platform gaming systems and methods
US8758136B2 (en) 1999-02-26 2014-06-24 Mq Gaming, Llc Multi-platform gaming systems and methods
US9731194B2 (en) 1999-02-26 2017-08-15 Mq Gaming, Llc Multi-platform gaming systems and methods
US7331115B2 (en) 1999-04-08 2008-02-19 Donnelly Corp. Vehicle compass compensation
US6922902B2 (en) 1999-04-08 2005-08-02 Donnelly Corporation Vehicle compass compensation
US20090292496A1 (en) * 1999-04-08 2009-11-26 Donnelly Corporation Vehicle compass compensation
US20050262714A1 (en) * 1999-04-08 2005-12-01 Schierbeek Kenneth L Vehicle compass compensation
US6513252B1 (en) 1999-04-08 2003-02-04 Donnelly Corporation Vehicle compass compensation
US8001696B2 (en) 1999-04-08 2011-08-23 Donnelly Corporation Vehicle compass compensation
US7568290B2 (en) 1999-04-08 2009-08-04 Donnelly Corporation Vehicle compass compensation
US20070118280A1 (en) * 1999-04-29 2007-05-24 Donnelly Corporation Navigation system for a vehicle
US8355853B2 (en) 1999-04-29 2013-01-15 Donnelly Corporation Control system for a hybrid vehicle
US8768568B2 (en) 1999-04-29 2014-07-01 Magna Electronics Inc. Driver assistance system for vehicle
US20080300779A1 (en) * 1999-04-29 2008-12-04 Donnelly Corporation Navigation system for a vehicle
US7412328B2 (en) 1999-04-29 2008-08-12 Donnelly Corporation Navigation system for a vehicle
US7353614B2 (en) * 1999-05-27 2008-04-08 Johnson Controls Technology Company Vehicle compass system with continuous automatic calibration
US7127823B2 (en) 1999-05-27 2006-10-31 Johnson Controls Technology Company Vehicle compass system with continuous automatic calibration
US20040123475A1 (en) * 1999-05-27 2004-07-01 Johnson Controls Technology Company Vehicle compass system with continuous automatic calibration
US6857194B2 (en) * 1999-05-27 2005-02-22 Johnson Controls Technology Company Vehicle compass system with continuous automatic calibration
US6301794B1 (en) 1999-05-27 2001-10-16 Johnson Controls, Inc. Vehicle compass system with continuous automatic calibration
US6643941B2 (en) 1999-05-27 2003-11-11 Johnson Controls Technology Company Vehicle compass system with continuous automatic calibration
US6964108B2 (en) 1999-05-27 2005-11-15 Johnson Controls Technology Company Vehicle compass system with continuous automatic calibration
US7191533B2 (en) 1999-05-27 2007-03-20 Johnson Controls Technology Company Vehicle compass system with continuous automatic calibration
US7458166B2 (en) 1999-05-27 2008-12-02 Johnson Controls Technology Company Vehicle compass system with continuous automatic calibration
US8629768B2 (en) 1999-08-12 2014-01-14 Donnelly Corporation Vehicle vision system
US9436880B2 (en) 1999-08-12 2016-09-06 Magna Electronics Inc. Vehicle vision system
US7580795B2 (en) 1999-11-24 2009-08-25 Donnelly Corporation Vehicular navigation system
US7926960B2 (en) 1999-11-24 2011-04-19 Donnelly Corporation Interior rearview mirror system for vehicle
US20070162229A1 (en) * 1999-11-24 2007-07-12 Donnelly Corporation, A Corporation Of The State Of Michigan Navigation system for a vehicle
US8162493B2 (en) 1999-11-24 2012-04-24 Donnelly Corporation Interior rearview mirror assembly for vehicle
US7328103B2 (en) 1999-11-24 2008-02-05 Donnelly Corporation Navigation system for a vehicle
US20090292466A1 (en) * 1999-11-24 2009-11-26 Donnelly Corporation Navigation sytem for a vehicle
US9019091B2 (en) 1999-11-24 2015-04-28 Donnelly Corporation Interior rearview mirror system
US9376061B2 (en) 1999-11-24 2016-06-28 Donnelly Corporation Accessory system of a vehicle
US7912646B2 (en) 1999-11-24 2011-03-22 Donnelly Corporation Driver assistance system for vehicle
US9278654B2 (en) 1999-11-24 2016-03-08 Donnelly Corporation Interior rearview mirror system for vehicle
US8491389B2 (en) 2000-02-22 2013-07-23 Creative Kingdoms, Llc. Motion-sensitive input device and interactive gaming system
US9814973B2 (en) 2000-02-22 2017-11-14 Mq Gaming, Llc Interactive entertainment system
US9713766B2 (en) 2000-02-22 2017-07-25 Mq Gaming, Llc Dual-range wireless interactive entertainment device
US8814688B2 (en) 2000-02-22 2014-08-26 Creative Kingdoms, Llc Customizable toy for playing a wireless interactive game having both physical and virtual elements
US8915785B2 (en) 2000-02-22 2014-12-23 Creative Kingdoms, Llc Interactive entertainment system
US8475275B2 (en) 2000-02-22 2013-07-02 Creative Kingdoms, Llc Interactive toys and games connecting physical and virtual play environments
US8531050B2 (en) 2000-02-22 2013-09-10 Creative Kingdoms, Llc Wirelessly powered gaming device
US8089458B2 (en) 2000-02-22 2012-01-03 Creative Kingdoms, Llc Toy devices and methods for providing an interactive play experience
US8184097B1 (en) 2000-02-22 2012-05-22 Creative Kingdoms, Llc Interactive gaming system and method using motion-sensitive input device
US9579568B2 (en) 2000-02-22 2017-02-28 Mq Gaming, Llc Dual-range wireless interactive entertainment device
US8790180B2 (en) 2000-02-22 2014-07-29 Creative Kingdoms, Llc Interactive game and associated wireless toy
US9474962B2 (en) 2000-02-22 2016-10-25 Mq Gaming, Llc Interactive entertainment system
US8169406B2 (en) 2000-02-22 2012-05-01 Creative Kingdoms, Llc Motion-sensitive wand controller for a game
US8368648B2 (en) 2000-02-22 2013-02-05 Creative Kingdoms, Llc Portable interactive toy with radio frequency tracking device
US9149717B2 (en) 2000-02-22 2015-10-06 Mq Gaming, Llc Dual-range wireless interactive entertainment device
US8708821B2 (en) 2000-02-22 2014-04-29 Creative Kingdoms, Llc Systems and methods for providing interactive game play
US8686579B2 (en) 2000-02-22 2014-04-01 Creative Kingdoms, Llc Dual-range wireless controller
US8164567B1 (en) 2000-02-22 2012-04-24 Creative Kingdoms, Llc Motion-sensitive game controller with optional display screen
US8676491B2 (en) 2000-03-02 2014-03-18 Magna Electronics Inc. Driver assist system for vehicle
US9315151B2 (en) 2000-03-02 2016-04-19 Magna Electronics Inc. Driver assist system for vehicle
US7474963B2 (en) 2000-03-02 2009-01-06 Donnelly Corporation Navigational mirror system for a vehicle
US8000894B2 (en) 2000-03-02 2011-08-16 Donnelly Corporation Vehicular wireless communication system
US8427288B2 (en) 2000-03-02 2013-04-23 Donnelly Corporation Rear vision system for a vehicle
US9019090B2 (en) 2000-03-02 2015-04-28 Magna Electronics Inc. Vision system for vehicle
US9014966B2 (en) 2000-03-02 2015-04-21 Magna Electronics Inc. Driver assist system for vehicle
US7490007B2 (en) 2000-03-02 2009-02-10 Donnelly Corporation Video mirror system for a vehicle
US8271187B2 (en) 2000-03-02 2012-09-18 Donnelly Corporation Vehicular video mirror system
US8044776B2 (en) 2000-03-02 2011-10-25 Donnelly Corporation Rear vision system for vehicle
US8095310B2 (en) 2000-03-02 2012-01-10 Donnelly Corporation Video mirror system for a vehicle
US9783114B2 (en) 2000-03-02 2017-10-10 Donnelly Corporation Vehicular video mirror system
US9809168B2 (en) 2000-03-02 2017-11-07 Magna Electronics Inc. Driver assist system for vehicle
US9809171B2 (en) 2000-03-02 2017-11-07 Magna Electronics Inc. Vision system for vehicle
US8121787B2 (en) 2000-03-02 2012-02-21 Donnelly Corporation Vehicular video mirror system
US8908039B2 (en) 2000-03-02 2014-12-09 Donnelly Corporation Vehicular video mirror system
US7583184B2 (en) 2000-03-02 2009-09-01 Donnelly Corporation Video mirror system suitable for use in a vehicle
US8543330B2 (en) 2000-03-02 2013-09-24 Donnelly Corporation Driver assist system for vehicle
US8179236B2 (en) 2000-03-02 2012-05-15 Donnelly Corporation Video mirror system suitable for use in a vehicle
US7822543B2 (en) 2000-03-02 2010-10-26 Donnelly Corporation Video display system for vehicle
US7711479B2 (en) 2000-03-02 2010-05-04 Donnelly Corporation Rearview assembly with display
US8194133B2 (en) 2000-03-02 2012-06-05 Donnelly Corporation Vehicular video mirror system
US7571042B2 (en) 2000-03-02 2009-08-04 Donnelly Corporation Navigation system for a vehicle
US20040128065A1 (en) * 2000-03-09 2004-07-01 Taylor David W. Vehicle navigation system for use with a telematics system
US7167796B2 (en) 2000-03-09 2007-01-23 Donnelly Corporation Vehicle navigation system for use with a telematics system
EP2420408A1 (en) 2000-03-20 2012-02-22 Gentex Corporation System for controlling exterior vehicle lights
US8961260B2 (en) 2000-10-20 2015-02-24 Mq Gaming, Llc Toy incorporating RFID tracking device
US8753165B2 (en) 2000-10-20 2014-06-17 Mq Gaming, Llc Wireless toy systems and methods for interactive entertainment
US9320976B2 (en) 2000-10-20 2016-04-26 Mq Gaming, Llc Wireless toy systems and methods for interactive entertainment
US9480929B2 (en) 2000-10-20 2016-11-01 Mq Gaming, Llc Toy incorporating RFID tag
US9931578B2 (en) 2000-10-20 2018-04-03 Mq Gaming, Llc Toy incorporating RFID tag
US7619508B2 (en) 2001-01-23 2009-11-17 Donnelly Corporation Video mirror system for a vehicle
US9352623B2 (en) 2001-01-23 2016-05-31 Magna Electronics Inc. Trailer hitching aid system for vehicle
US7731403B2 (en) 2001-01-23 2010-06-08 Donnelly Corpoation Lighting system for a vehicle, with high-intensity power LED
US8654433B2 (en) 2001-01-23 2014-02-18 Magna Mirrors Of America, Inc. Rearview mirror assembly for vehicle
US8653959B2 (en) 2001-01-23 2014-02-18 Donnelly Corporation Video mirror system for a vehicle
US9694749B2 (en) 2001-01-23 2017-07-04 Magna Electronics Inc. Trailer hitching aid system for vehicle
US8083386B2 (en) 2001-01-23 2011-12-27 Donnelly Corporation Interior rearview mirror assembly with display device
US8072318B2 (en) 2001-01-23 2011-12-06 Donnelly Corporation Video mirror system for vehicle
US8248367B1 (en) 2001-02-22 2012-08-21 Creative Kingdoms, Llc Wireless gaming system combining both physical and virtual play elements
US8384668B2 (en) 2001-02-22 2013-02-26 Creative Kingdoms, Llc Portable gaming device and gaming system combining both physical and virtual play elements
US9737797B2 (en) 2001-02-22 2017-08-22 Mq Gaming, Llc Wireless entertainment device, system, and method
US8913011B2 (en) 2001-02-22 2014-12-16 Creative Kingdoms, Llc Wireless entertainment device, system, and method
US9393491B2 (en) 2001-02-22 2016-07-19 Mq Gaming, Llc Wireless entertainment device, system, and method
US9162148B2 (en) 2001-02-22 2015-10-20 Mq Gaming, Llc Wireless entertainment device, system, and method
US8711094B2 (en) 2001-02-22 2014-04-29 Creative Kingdoms, Llc Portable gaming device and gaming system combining both physical and virtual play elements
US9376060B2 (en) 2001-07-31 2016-06-28 Magna Electronics Inc. Driver assist system for vehicle
US9463744B2 (en) 2001-07-31 2016-10-11 Magna Electronics Inc. Driver assistance system for a vehicle
US9656608B2 (en) 2001-07-31 2017-05-23 Magna Electronics Inc. Driver assist system for vehicle
US9245448B2 (en) 2001-07-31 2016-01-26 Magna Electronics Inc. Driver assistance system for a vehicle
US9834142B2 (en) 2001-07-31 2017-12-05 Magna Electronics Inc. Driving assist system for vehicle
US9191574B2 (en) 2001-07-31 2015-11-17 Magna Electronics Inc. Vehicular vision system
US6472993B1 (en) 2001-10-16 2002-10-29 Pittway Corp. Singular housing window or door intrusion detector using earth magnetic field sensor
US6724316B2 (en) 2001-10-16 2004-04-20 Honeywell International Inc. Method and apparatus for detection of motion with a gravitational field detector in a security system
US20040254727A1 (en) * 2002-03-01 2004-12-16 Ockerse Harold C. Electronic compass system
US20070124076A1 (en) * 2002-03-01 2007-05-31 Gentex Corporation Electronic compass system
US20040236510A1 (en) * 2002-03-01 2004-11-25 Ockerse Harold C. Electronic compass system
CN1639542B (en) 2002-03-01 2012-04-25 金泰克斯公司 Electronic compass system
US7379814B2 (en) 2002-03-01 2008-05-27 Gentex Corporation Electronic compass system
US6928366B2 (en) 2002-03-01 2005-08-09 Gentex Corporation Electronic compass system
US7266452B2 (en) 2002-03-01 2007-09-04 Gentex Corporation Electronic compass system
US7149627B2 (en) 2002-03-01 2006-12-12 Gentex Corporation Electronic compass system
US6968273B2 (en) 2002-03-01 2005-11-22 Gentex Corporation Electronic compass system
US6817643B2 (en) 2002-03-28 2004-11-16 Lear Corporation Vehicle console assembly
US8702515B2 (en) 2002-04-05 2014-04-22 Mq Gaming, Llc Multi-platform gaming system using RFID-tagged toys
US9463380B2 (en) 2002-04-05 2016-10-11 Mq Gaming, Llc System and method for playing an interactive game
US8827810B2 (en) 2002-04-05 2014-09-09 Mq Gaming, Llc Methods for providing interactive entertainment
US9616334B2 (en) 2002-04-05 2017-04-11 Mq Gaming, Llc Multi-platform gaming system using RFID-tagged toys
US8608535B2 (en) 2002-04-05 2013-12-17 Mq Gaming, Llc Systems and methods for providing an interactive game
US9272206B2 (en) 2002-04-05 2016-03-01 Mq Gaming, Llc System and method for playing an interactive game
US6946978B2 (en) 2002-04-25 2005-09-20 Donnelly Corporation Imaging system for vehicle
US20030236622A1 (en) * 2002-04-25 2003-12-25 Kenneth Schofield Imaging system for vehicle
US9171217B2 (en) 2002-05-03 2015-10-27 Magna Electronics Inc. Vision system for vehicle
US8304711B2 (en) 2002-05-03 2012-11-06 Donnelly Corporation Vehicle rearview mirror system
US8665079B2 (en) 2002-05-03 2014-03-04 Magna Electronics Inc. Vision system for vehicle
US9643605B2 (en) 2002-05-03 2017-05-09 Magna Electronics Inc. Vision system for vehicle
US7906756B2 (en) 2002-05-03 2011-03-15 Donnelly Corporation Vehicle rearview mirror system
US9555803B2 (en) 2002-05-03 2017-01-31 Magna Electronics Inc. Driver assistance system for vehicle
US8106347B2 (en) 2002-05-03 2012-01-31 Donnelly Corporation Vehicle rearview mirror system
US9834216B2 (en) 2002-05-03 2017-12-05 Magna Electronics Inc. Vehicular control system using cameras and radar sensor
US20090059405A1 (en) * 2002-06-06 2009-03-05 Donnelly Corporation Interior rearview mirror system with compass
US7540620B2 (en) 2002-06-06 2009-06-02 Donnelly Corporation Video mirror system with compass
US7832882B2 (en) 2002-06-06 2010-11-16 Donnelly Corporation Information mirror system
US20090144996A1 (en) * 2002-06-06 2009-06-11 Donnelly Corporation Interior rearview mirror system with compass
US7490944B2 (en) 2002-06-06 2009-02-17 Donnelly Corporation Interior rearview mirror system with compass
US7452090B2 (en) 2002-06-06 2008-11-18 Donnelly Corporation Interior rearview mirror system with compass
US8465163B2 (en) 2002-06-06 2013-06-18 Donnelly Corporation Interior rearview mirror system
US8608327B2 (en) 2002-06-06 2013-12-17 Donnelly Corporation Automatic compass system for vehicle
US7815326B2 (en) 2002-06-06 2010-10-19 Donnelly Corporation Interior rearview mirror system
US20090231741A1 (en) * 2002-06-06 2009-09-17 Donnelly Corporation Interior rearview mirror system with compass
US7600878B2 (en) 2002-06-06 2009-10-13 Donnelly Corp. Interior rearview mirror system with compass
US8777431B2 (en) 2002-06-06 2014-07-15 Donnelly Corporation Integrated automatic compass for vehicle
US20040032675A1 (en) * 2002-06-06 2004-02-19 Weller Andrew D. Interior rearview mirror system with compass
US8465162B2 (en) 2002-06-06 2013-06-18 Donnelly Corporation Vehicular interior rearview mirror system
US8177376B2 (en) 2002-06-06 2012-05-15 Donnelly Corporation Vehicular interior rearview mirror system
US7918570B2 (en) 2002-06-06 2011-04-05 Donnelly Corporation Vehicular interior rearview information mirror system
US20060132939A1 (en) * 2002-06-06 2006-06-22 Blank Rodney K Interior rearview mirror system with compass
US7726822B2 (en) 2002-06-06 2010-06-01 Donnelly Corporation Interior rearview mirror system
US20100027145A1 (en) * 2002-06-06 2010-02-04 Donnelly Corporation Interior rearview mirror system with compass
US8282226B2 (en) 2002-06-06 2012-10-09 Donnelly Corporation Interior rearview mirror system
US7004593B2 (en) 2002-06-06 2006-02-28 Donnelly Corporation Interior rearview mirror system with compass
US7670016B2 (en) 2002-06-06 2010-03-02 Donnelly Corporation Interior rearview mirror system with compass
US7329013B2 (en) 2002-06-06 2008-02-12 Donnelly Corporation Interior rearview mirror system with compass
US8047667B2 (en) 2002-06-06 2011-11-01 Donnelly Corporation Vehicular interior rearview mirror system
US8226493B2 (en) 2002-08-01 2012-07-24 Creative Kingdoms, Llc Interactive play devices for water play attractions
US9090211B2 (en) 2002-09-20 2015-07-28 Donnelly Corporation Variable reflectance mirror reflective element for exterior mirror assembly
US7864399B2 (en) 2002-09-20 2011-01-04 Donnelly Corporation Reflective mirror assembly
US9073491B2 (en) 2002-09-20 2015-07-07 Donnelly Corporation Exterior rearview mirror assembly
US7859737B2 (en) 2002-09-20 2010-12-28 Donnelly Corporation Interior rearview mirror system for a vehicle
US8727547B2 (en) 2002-09-20 2014-05-20 Donnelly Corporation Variable reflectance mirror reflective element for exterior mirror assembly
US9545883B2 (en) 2002-09-20 2017-01-17 Donnelly Corporation Exterior rearview mirror assembly
US8797627B2 (en) 2002-09-20 2014-08-05 Donnelly Corporation Exterior rearview mirror assembly
US8228588B2 (en) 2002-09-20 2012-07-24 Donnelly Corporation Interior rearview mirror information display system for a vehicle
US8335032B2 (en) 2002-09-20 2012-12-18 Donnelly Corporation Reflective mirror assembly
US9878670B2 (en) 2002-09-20 2018-01-30 Donnelly Corporation Variable reflectance mirror reflective element for exterior mirror assembly
US7826123B2 (en) 2002-09-20 2010-11-02 Donnelly Corporation Vehicular interior electrochromic rearview mirror assembly
US9341914B2 (en) 2002-09-20 2016-05-17 Donnelly Corporation Variable reflectance mirror reflective element for exterior mirror assembly
US8506096B2 (en) 2002-09-20 2013-08-13 Donnelly Corporation Variable reflectance mirror reflective element for exterior mirror assembly
US7586666B2 (en) 2002-09-20 2009-09-08 Donnelly Corp. Interior rearview mirror system for a vehicle
US8277059B2 (en) 2002-09-20 2012-10-02 Donnelly Corporation Vehicular electrochromic interior rearview mirror assembly
US8400704B2 (en) 2002-09-20 2013-03-19 Donnelly Corporation Interior rearview mirror system for a vehicle
US9770652B2 (en) 2003-03-25 2017-09-26 Mq Gaming, Llc Wireless interactive game having both physical and virtual elements
US9039533B2 (en) 2003-03-25 2015-05-26 Creative Kingdoms, Llc Wireless interactive game having both physical and virtual elements
US8373659B2 (en) 2003-03-25 2013-02-12 Creative Kingdoms, Llc Wirelessly-powered toy for gaming
US9393500B2 (en) 2003-03-25 2016-07-19 Mq Gaming, Llc Wireless interactive game having both physical and virtual elements
US9707478B2 (en) 2003-03-25 2017-07-18 Mq Gaming, Llc Motion-sensitive controller and associated gaming applications
US9446319B2 (en) 2003-03-25 2016-09-20 Mq Gaming, Llc Interactive gaming toy
US9993724B2 (en) 2003-03-25 2018-06-12 Mq Gaming, Llc Interactive gaming toy
US8961312B2 (en) 2003-03-25 2015-02-24 Creative Kingdoms, Llc Motion-sensitive controller and associated gaming applications
US9783115B2 (en) 2003-05-19 2017-10-10 Donnelly Corporation Rearview mirror assembly for vehicle
US8049640B2 (en) 2003-05-19 2011-11-01 Donnelly Corporation Mirror assembly for vehicle
US8325055B2 (en) 2003-05-19 2012-12-04 Donnelly Corporation Mirror assembly for vehicle
US9557584B2 (en) 2003-05-19 2017-01-31 Donnelly Corporation Rearview mirror assembly for vehicle
US8508384B2 (en) 2003-05-19 2013-08-13 Donnelly Corporation Rearview mirror assembly for vehicle
US7898719B2 (en) 2003-10-02 2011-03-01 Donnelly Corporation Rearview mirror assembly for vehicle
US8705161B2 (en) 2003-10-02 2014-04-22 Donnelly Corporation Method of manufacturing a reflective element for a vehicular rearview mirror assembly
US8379289B2 (en) 2003-10-02 2013-02-19 Donnelly Corporation Rearview mirror assembly for vehicle
US8179586B2 (en) 2003-10-02 2012-05-15 Donnelly Corporation Rearview mirror assembly for vehicle
US8355839B2 (en) 2003-10-14 2013-01-15 Donnelly Corporation Vehicle vision system with night vision function
US8170748B1 (en) 2003-10-14 2012-05-01 Donnelly Corporation Vehicle information display system
US8095260B1 (en) 2003-10-14 2012-01-10 Donnelly Corporation Vehicle information display
US8019505B2 (en) 2003-10-14 2011-09-13 Donnelly Corporation Vehicle information display
US8886401B2 (en) 2003-10-14 2014-11-11 Donnelly Corporation Driver assistance system for a vehicle
US8577549B2 (en) 2003-10-14 2013-11-05 Donnelly Corporation Information display system for a vehicle
WO2005077000A2 (en) * 2004-02-04 2005-08-25 Lars Richter A machine for simultaneously measuring and compounding angles about multiple axes
WO2005077000A3 (en) * 2004-02-04 2006-02-16 Lars Richter A machine for simultaneously measuring and compounding angles about multiple axes
US20050166410A1 (en) * 2004-02-04 2005-08-04 Lars Richter Machine for simultaneously measuring and compounding angles about multiple axes
US8325986B2 (en) 2004-04-15 2012-12-04 Donnelly Corporation Imaging system for vehicle
US7792329B2 (en) 2004-04-15 2010-09-07 Donnelly Corporation Imaging system for vehicle
US7616781B2 (en) 2004-04-15 2009-11-10 Donnelly Corporation Driver assistance system for vehicle
US7526103B2 (en) 2004-04-15 2009-04-28 Donnelly Corporation Imaging system for vehicle
US9428192B2 (en) 2004-04-15 2016-08-30 Magna Electronics Inc. Vision system for vehicle
US9948904B2 (en) 2004-04-15 2018-04-17 Magna Electronics Inc. Vision system for vehicle
US8090153B2 (en) 2004-04-15 2012-01-03 Donnelly Corporation Imaging system for vehicle
US9736435B2 (en) 2004-04-15 2017-08-15 Magna Electronics Inc. Vision system for vehicle
US7873187B2 (en) 2004-04-15 2011-01-18 Donnelly Corporation Driver assistance system for vehicle
US8593521B2 (en) 2004-04-15 2013-11-26 Magna Electronics Inc. Imaging system for vehicle
US9191634B2 (en) 2004-04-15 2015-11-17 Magna Electronics Inc. Vision system for vehicle
US7949152B2 (en) 2004-04-15 2011-05-24 Donnelly Corporation Driver assistance system for vehicle
US9008369B2 (en) 2004-04-15 2015-04-14 Magna Electronics Inc. Vision system for vehicle
US9609289B2 (en) 2004-04-15 2017-03-28 Magna Electronics Inc. Vision system for vehicle
US8818042B2 (en) 2004-04-15 2014-08-26 Magna Electronics Inc. Driver assistance system for vehicle
US9675878B2 (en) 2004-09-29 2017-06-13 Mq Gaming, Llc System and method for playing a virtual game by sensing physical movements
US8189871B2 (en) 2004-09-30 2012-05-29 Donnelly Corporation Vision system for vehicle
US8977008B2 (en) 2004-09-30 2015-03-10 Donnelly Corporation Driver assistance system for vehicle
US8483439B2 (en) 2004-09-30 2013-07-09 Donnelly Corporation Vision system for vehicle
US8282253B2 (en) 2004-11-22 2012-10-09 Donnelly Corporation Mirror reflective element sub-assembly for exterior rearview mirror of a vehicle
US9940528B2 (en) 2004-12-23 2018-04-10 Magna Electronics Inc. Driver assistance system for vehicle
US9014904B2 (en) 2004-12-23 2015-04-21 Magna Electronics Inc. Driver assistance system for vehicle
US9193303B2 (en) 2004-12-23 2015-11-24 Magna Electronics Inc. Driver assistance system for vehicle
US8503062B2 (en) 2005-05-16 2013-08-06 Donnelly Corporation Rearview mirror element assembly for vehicle
US8313379B2 (en) 2005-08-22 2012-11-20 Nintendo Co., Ltd. Video game system with wireless modular handheld controller
US9700806B2 (en) 2005-08-22 2017-07-11 Nintendo Co., Ltd. Game operating device
US9498728B2 (en) 2005-08-22 2016-11-22 Nintendo Co., Ltd. Game operating device
US9011248B2 (en) 2005-08-22 2015-04-21 Nintendo Co., Ltd. Game operating device
US8409003B2 (en) 2005-08-24 2013-04-02 Nintendo Co., Ltd. Game controller and game system
US8267786B2 (en) 2005-08-24 2012-09-18 Nintendo Co., Ltd. Game controller and game system
US9044671B2 (en) 2005-08-24 2015-06-02 Nintendo Co., Ltd. Game controller and game system
US8834271B2 (en) 2005-08-24 2014-09-16 Nintendo Co., Ltd. Game controller and game system
US8870655B2 (en) 2005-08-24 2014-10-28 Nintendo Co., Ltd. Wireless game controllers
US9498709B2 (en) 2005-08-24 2016-11-22 Nintendo Co., Ltd. Game controller and game system
US9227138B2 (en) 2005-08-24 2016-01-05 Nintendo Co., Ltd. Game controller and game system
US8308563B2 (en) 2005-08-30 2012-11-13 Nintendo Co., Ltd. Game system and storage medium having game program stored thereon
US8157651B2 (en) 2005-09-12 2012-04-17 Nintendo Co., Ltd. Information processing program
US8708824B2 (en) 2005-09-12 2014-04-29 Nintendo Co., Ltd. Information processing program
US8833987B2 (en) 2005-09-14 2014-09-16 Donnelly Corporation Mirror reflective element sub-assembly for exterior rearview mirror of a vehicle
US9758102B1 (en) 2005-09-14 2017-09-12 Magna Mirrors Of America, Inc. Mirror reflective element sub-assembly for exterior rearview mirror of a vehicle
US9045091B2 (en) 2005-09-14 2015-06-02 Donnelly Corporation Mirror reflective element sub-assembly for exterior rearview mirror of a vehicle
US9694753B2 (en) 2005-09-14 2017-07-04 Magna Mirrors Of America, Inc. Mirror reflective element sub-assembly for exterior rearview mirror of a vehicle
US8430753B2 (en) 2005-09-15 2013-04-30 Nintendo Co., Ltd. Video game system with wireless modular handheld controller
USRE45905E1 (en) 2005-09-15 2016-03-01 Nintendo Co., Ltd. Video game system with wireless modular handheld controller
US7927216B2 (en) 2005-09-15 2011-04-19 Nintendo Co., Ltd. Video game system with wireless modular handheld controller
US7855755B2 (en) 2005-11-01 2010-12-21 Donnelly Corporation Interior rearview mirror assembly with display
US7774155B2 (en) 2006-03-10 2010-08-10 Nintendo Co., Ltd. Accelerometer-based controller
US9440535B2 (en) 2006-08-11 2016-09-13 Magna Electronics Inc. Vision system for vehicle
US8636393B2 (en) 2006-08-11 2014-01-28 Magna Electronics Inc. Driver assistance system for vehicle
US7716008B2 (en) 2007-01-19 2010-05-11 Nintendo Co., Ltd. Acceleration data processing program, and storage medium, and acceleration data processing apparatus for use with the same
US9140789B2 (en) 2007-01-25 2015-09-22 Magna Electronics Inc. Forward facing sensing system for vehicle
US9244165B1 (en) 2007-01-25 2016-01-26 Magna Electronics Inc. Forward facing sensing system for vehicle
US8294608B1 (en) 2007-01-25 2012-10-23 Magna Electronics, Inc. Forward facing sensing system for vehicle
US8614640B2 (en) 2007-01-25 2013-12-24 Magna Electronics Inc. Forward facing sensing system for vehicle
US8217830B2 (en) 2007-01-25 2012-07-10 Magna Electronics Inc. Forward facing sensing system for a vehicle
US8142059B2 (en) 2007-07-12 2012-03-27 Magna Electronics Inc. Automatic lighting system
US8070332B2 (en) 2007-07-12 2011-12-06 Magna Electronics Inc. Automatic lighting system with adaptive function
US8814401B2 (en) 2007-07-12 2014-08-26 Magna Electronics Inc. Vehicular vision system
US9018577B2 (en) 2007-08-17 2015-04-28 Magna Electronics Inc. Vehicular imaging system with camera misalignment correction and capturing image data at different resolution levels dependent on distance to object in field of view
US9972100B2 (en) 2007-08-17 2018-05-15 Magna Electronics Inc. Vehicular imaging system comprising an imaging device with a single image sensor and image processor for determining a totally blocked state or partially blocked state of the single image sensor as well as an automatic correction for misalignment of the imaging device
US9796332B2 (en) 2007-09-11 2017-10-24 Magna Electronics Inc. Imaging system for vehicle
US8451107B2 (en) 2007-09-11 2013-05-28 Magna Electronics, Inc. Imaging system for vehicle
US8446470B2 (en) 2007-10-04 2013-05-21 Magna Electronics, Inc. Combined RGB and IR imaging sensor
US10003755B2 (en) 2007-10-04 2018-06-19 Magna Electronics Inc. Imaging system for vehicle
US8908040B2 (en) 2007-10-04 2014-12-09 Magna Electronics Inc. Imaging system for vehicle
US8154418B2 (en) 2008-03-31 2012-04-10 Magna Mirrors Of America, Inc. Interior rearview mirror system
US8508383B2 (en) 2008-03-31 2013-08-13 Magna Mirrors of America, Inc Interior rearview mirror system
US9487144B2 (en) 2008-10-16 2016-11-08 Magna Mirrors Of America, Inc. Interior mirror assembly with display
US9911050B2 (en) 2009-02-27 2018-03-06 Magna Electronics Inc. Driver active safety control system for vehicle
US9126525B2 (en) 2009-02-27 2015-09-08 Magna Electronics Inc. Alert system for vehicle
US8874317B2 (en) 2009-07-27 2014-10-28 Magna Electronics Inc. Parking assist system
US9868463B2 (en) 2009-07-27 2018-01-16 Magna Electronics Inc. Parking assist system
US9457717B2 (en) 2009-07-27 2016-10-04 Magna Electronics Inc. Parking assist system
US9495876B2 (en) 2009-07-27 2016-11-15 Magna Electronics Inc. Vehicular camera with on-board microcontroller
US9041806B2 (en) 2009-09-01 2015-05-26 Magna Electronics Inc. Imaging and display system for vehicle
US9789821B2 (en) 2009-09-01 2017-10-17 Magna Electronics Inc. Imaging and display system for vehicle
US8890955B2 (en) 2010-02-10 2014-11-18 Magna Mirrors Of America, Inc. Adaptable wireless vehicle vision system based on wireless communication error
US9117123B2 (en) 2010-07-05 2015-08-25 Magna Electronics Inc. Vehicular rear view camera display system with lifecheck function
US9598016B2 (en) 2010-10-15 2017-03-21 Magna Mirrors Of America, Inc. Interior rearview mirror assembly
DE112011103834T5 (en) 2010-11-19 2013-09-05 Magna Electronics, Inc. Lane departure warning and lane centering
US9900522B2 (en) 2010-12-01 2018-02-20 Magna Electronics Inc. System and method of establishing a multi-camera image using pixel remapping
US9731653B2 (en) 2010-12-22 2017-08-15 Magna Electronics Inc. Vision display system for vehicle
US9469250B2 (en) 2010-12-22 2016-10-18 Magna Electronics Inc. Vision display system for vehicle
US9598014B2 (en) 2010-12-22 2017-03-21 Magna Electronics Inc. Vision display system for vehicle
US9264672B2 (en) 2010-12-22 2016-02-16 Magna Mirrors Of America, Inc. Vision display system for vehicle
US9950738B2 (en) 2011-01-26 2018-04-24 Magna Electronics Inc. Trailering assist system with trailer angle detection
US9085261B2 (en) 2011-01-26 2015-07-21 Magna Electronics Inc. Rear vision system with trailer angle detection
US9802542B2 (en) 2012-09-26 2017-10-31 Magna Electronics Inc. Trailer angle detection system calibration
US9779313B2 (en) 2012-09-26 2017-10-03 Magna Electronics Inc. Vehicle vision system with trailer angle detection
US9558409B2 (en) 2012-09-26 2017-01-31 Magna Electronics Inc. Vehicle vision system with trailer angle detection
US9446713B2 (en) 2012-09-26 2016-09-20 Magna Electronics Inc. Trailer angle detection system
US9587942B2 (en) 2014-04-01 2017-03-07 Magna Mirrors Of America, Inc. Vehicle compass system with heated windshield compensation

Also Published As

Publication number Publication date Type
CA1198890A (en) 1986-01-07 grant
ES527060A0 (en) 1985-01-01 application
CA1198890A1 (en) grant
JPH055043B2 (en) 1993-01-21 grant
ES527060D0 (en) grant
EP0120691B1 (en) 1992-05-06 grant
JP1797194C (en) grant
EP0120691A2 (en) 1984-10-03 application
ES8502542A1 (en) 1985-01-01 application
JPS59174881A (en) 1984-10-03 application
DE3485691D1 (en) 1992-06-11 grant
EP0120691A3 (en) 1987-05-27 application

Similar Documents

Publication Publication Date Title
US5638279A (en) Vehicle navigation system and navigation method
US4733179A (en) Method of determining an interference-magnetic field in a motor vehicle provided with an electronic compass
US4839600A (en) Ammeter for use with A.C. electric power lines
US5090231A (en) Electronic compass system
US6532419B1 (en) Calibration of multi-axis accelerometer in vehicle navigation system
US4413424A (en) Azimuth determinating apparatus
US4937752A (en) An apparatus for correcting distance error in a navigation system
US5935191A (en) Navigation apparatus for a vehicle
US6012002A (en) Vehicle travel meter
US6282803B1 (en) Self calibration circuit for determining an accurate zero compensation for a fluxgate compass
US5235514A (en) Apparatus for estimating current heading using magnetic and angular velocity sensors
US6012014A (en) Map display apparatus for motor vehicle
US4890233A (en) Vehicle bearing detection and data processing methods applicable to vehicle navigation system
US5323152A (en) Apparatus for detecting the position of a vehicle
US6353796B1 (en) Vehicle tracker, mileage-time monitor and calibrator
US6597987B1 (en) Method for improving vehicle positioning in a navigation system
US5483456A (en) Navigation system and a method of calculating GPS measuring deviation
US5297065A (en) Magnetic transient detection and calibration technique for an auto-calibrating compass
US5371497A (en) Navigation system for vehicles
US5131154A (en) Method and apparatus for compensating a magnetic compass
US4862594A (en) Magnetic compass system for a vehicle
US4445279A (en) Magnetic course detector
DE3619824C2 (en) Means for displaying the currently valid or safe for the environment Maximum speed for road vehicles
US4807462A (en) Method for performing automatic calibrations in an electronic compass
US4402142A (en) Electronic compass for automotive vehicles

Legal Events

Date Code Title Description
AS Assignment

Owner name: PRINCE CORPORATION; WINDCREST DR., HOLLAND, MI. 49

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:FRANKS, JEFFREY L.;REEL/FRAME:004110/0070

Effective date: 19830228

FPAY Fee payment

Year of fee payment: 4

FPAY Fee payment

Year of fee payment: 8

FPAY Fee payment

Year of fee payment: 12

AS Assignment

Owner name: JOHNSON CONTROLS INTERIORS TECHNOLOGY CORP., MICHI

Free format text: CHANGE OF NAME;ASSIGNOR:PRINCE TECHNOLOGY CORPORATION;REEL/FRAME:013193/0700

Effective date: 19991215

Owner name: JOHNSON CONTROLS TECHNOLOGY COMPANY, MICHIGAN

Free format text: MERGER;ASSIGNOR:JOHNSON CONTROLS INTERIORS TECHNOLOGY CORP.;REEL/FRAME:013193/0680

Effective date: 20001218

Owner name: PRINCE TECHNOLOGY CORPORATION, MICHIGAN

Free format text: CHANGE OF NAME;ASSIGNOR:PRINCE CORPORATION;REEL/FRAME:013193/0711

Effective date: 19981201